Home / 15,617.91-21,553.29-8,902.46

Finding the Fourth Proportional to 15,617.91, 21,553.29 and 8,902.46

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Solution

The fourth proportional to 15,617.91, 21,553.29 and 8,902.46 is: 12,285.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.91 : 21,553.29 = 8,902.46 : x
  2. Step 2: Convert to fraction form
    15,617.91/21,553.29 = 8,902.46/x
  3. Step 3: Cross multiply
    15,617.91x = 21,553.29 × 8,902.46
  4. Step 4: Simplify right side
    15,617.91x = 191,877,234.74
  5. Step 5: Solve for x
    x = 191,877,234.74/15,617.91
  6. Step 6: Final answer
    x = 12,285.71

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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.