Home / 15,580.52-21,500.29-8,505.56

Finding the Fourth Proportional to 15,580.52, 21,500.29 and 8,505.56

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Solution

The fourth proportional to 15,580.52, 21,500.29 and 8,505.56 is: 11,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.52 : 21,500.29 = 8,505.56 : x
  2. Step 2: Convert to fraction form
    15,580.52/21,500.29 = 8,505.56/x
  3. Step 3: Cross multiply
    15,580.52x = 21,500.29 × 8,505.56
  4. Step 4: Simplify right side
    15,580.52x = 182,872,006.61
  5. Step 5: Solve for x
    x = 182,872,006.61/15,580.52
  6. Step 6: Final answer
    x = 11,737.22

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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.