Home / 15,059.32-20,781.29-8,686.17

Finding the Fourth Proportional to 15,059.32, 20,781.29 and 8,686.17

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Solution

The fourth proportional to 15,059.32, 20,781.29 and 8,686.17 is: 11,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.32 : 20,781.29 = 8,686.17 : x
  2. Step 2: Convert to fraction form
    15,059.32/20,781.29 = 8,686.17/x
  3. Step 3: Cross multiply
    15,059.32x = 20,781.29 × 8,686.17
  4. Step 4: Simplify right side
    15,059.32x = 180,509,839.47
  5. Step 5: Solve for x
    x = 180,509,839.47/15,059.32
  6. Step 6: Final answer
    x = 11,986.59

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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.