Home / 11,685.19-16,125.45-7,207.15

Finding the Fourth Proportional to 11,685.19, 16,125.45 and 7,207.15

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Solution

The fourth proportional to 11,685.19, 16,125.45 and 7,207.15 is: 9,945.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.19 : 16,125.45 = 7,207.15 : x
  2. Step 2: Convert to fraction form
    11,685.19/16,125.45 = 7,207.15/x
  3. Step 3: Cross multiply
    11,685.19x = 16,125.45 × 7,207.15
  4. Step 4: Simplify right side
    11,685.19x = 116,218,536.97
  5. Step 5: Solve for x
    x = 116,218,536.97/11,685.19
  6. Step 6: Final answer
    x = 9,945.80

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Half scale
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Double scale
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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.