Home / 38,378.51-52,961.54-21,382.73

Finding the Fourth Proportional to 38,378.51, 52,961.54 and 21,382.73

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Solution

The fourth proportional to 38,378.51, 52,961.54 and 21,382.73 is: 29,507.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,378.51 : 52,961.54 = 21,382.73 : x
  2. Step 2: Convert to fraction form
    38,378.51/52,961.54 = 21,382.73/x
  3. Step 3: Cross multiply
    38,378.51x = 52,961.54 × 21,382.73
  4. Step 4: Simplify right side
    38,378.51x = 1,132,462,310.20
  5. Step 5: Solve for x
    x = 1,132,462,310.20/38,378.51
  6. Step 6: Final answer
    x = 29,507.72

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Half scale
Find fourth proportional to 76,757.02, 105,923.08 and 42,765.46
Double scale
Find fourth proportional to 38,379.51, 52,962.92 and 21,383.73
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.