Home / 15,561.56-21,475.11-8,488.14

Finding the Fourth Proportional to 15,561.56, 21,475.11 and 8,488.14

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Solution

The fourth proportional to 15,561.56, 21,475.11 and 8,488.14 is: 11,713.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.56 : 21,475.11 = 8,488.14 : x
  2. Step 2: Convert to fraction form
    15,561.56/21,475.11 = 8,488.14/x
  3. Step 3: Cross multiply
    15,561.56x = 21,475.11 × 8,488.14
  4. Step 4: Simplify right side
    15,561.56x = 182,283,691.49
  5. Step 5: Solve for x
    x = 182,283,691.49/15,561.56
  6. Step 6: Final answer
    x = 11,713.71

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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.