Home / 27,840.38-38,422.51-15,905.51

Finding the Fourth Proportional to 27,840.38, 38,422.51 and 15,905.51

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Solution

The fourth proportional to 27,840.38, 38,422.51 and 15,905.51 is: 21,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.38 : 38,422.51 = 15,905.51 : x
  2. Step 2: Convert to fraction form
    27,840.38/38,422.51 = 15,905.51/x
  3. Step 3: Cross multiply
    27,840.38x = 38,422.51 × 15,905.51
  4. Step 4: Simplify right side
    27,840.38x = 611,129,857.20
  5. Step 5: Solve for x
    x = 611,129,857.20/27,840.38
  6. Step 6: Final answer
    x = 21,951.20

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Find fourth proportional to 13,920.19, 19,211.26 and 7,952.76
Half scale
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Double scale
Find fourth proportional to 27,841.38, 38,423.89 and 15,906.51
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.