Home / 20,697.17-28,562.05-11,265.71

Finding the Fourth Proportional to 20,697.17, 28,562.05 and 11,265.71

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Solution

The fourth proportional to 20,697.17, 28,562.05 and 11,265.71 is: 15,546.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.17 : 28,562.05 = 11,265.71 : x
  2. Step 2: Convert to fraction form
    20,697.17/28,562.05 = 11,265.71/x
  3. Step 3: Cross multiply
    20,697.17x = 28,562.05 × 11,265.71
  4. Step 4: Simplify right side
    20,697.17x = 321,771,772.31
  5. Step 5: Solve for x
    x = 321,771,772.31/20,697.17
  6. Step 6: Final answer
    x = 15,546.66

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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.