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Finding the Fourth Proportional to 11,434.57, 15,785.13 and 8,603.02

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Solution

The fourth proportional to 11,434.57, 15,785.13 and 8,603.02 is: 11,876.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,434.57 : 15,785.13 = 8,603.02 : x
  2. Step 2: Convert to fraction form
    11,434.57/15,785.13 = 8,603.02/x
  3. Step 3: Cross multiply
    11,434.57x = 15,785.13 × 8,603.02
  4. Step 4: Simplify right side
    11,434.57x = 135,799,789.09
  5. Step 5: Solve for x
    x = 135,799,789.09/11,434.57
  6. Step 6: Final answer
    x = 11,876.25

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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.