Home / 15,505.36-21,397.85-9,540.52

Finding the Fourth Proportional to 15,505.36, 21,397.85 and 9,540.52

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Solution

The fourth proportional to 15,505.36, 21,397.85 and 9,540.52 is: 13,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.36 : 21,397.85 = 9,540.52 : x
  2. Step 2: Convert to fraction form
    15,505.36/21,397.85 = 9,540.52/x
  3. Step 3: Cross multiply
    15,505.36x = 21,397.85 × 9,540.52
  4. Step 4: Simplify right side
    15,505.36x = 204,146,568.18
  5. Step 5: Solve for x
    x = 204,146,568.18/15,505.36
  6. Step 6: Final answer
    x = 13,166.19

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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.