Home / 15,221.97-21,006.27-8,507.52

Finding the Fourth Proportional to 15,221.97, 21,006.27 and 8,507.52

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Solution

The fourth proportional to 15,221.97, 21,006.27 and 8,507.52 is: 11,740.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.97 : 21,006.27 = 8,507.52 : x
  2. Step 2: Convert to fraction form
    15,221.97/21,006.27 = 8,507.52/x
  3. Step 3: Cross multiply
    15,221.97x = 21,006.27 × 8,507.52
  4. Step 4: Simplify right side
    15,221.97x = 178,711,262.15
  5. Step 5: Solve for x
    x = 178,711,262.15/15,221.97
  6. Step 6: Final answer
    x = 11,740.35

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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.