Home / 15,716.30-21,666.11-12,501.41

Finding the Fourth Proportional to 15,716.30, 21,666.11 and 12,501.41

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Solution

The fourth proportional to 15,716.30, 21,666.11 and 12,501.41 is: 17,234.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,716.30 : 21,666.11 = 12,501.41 : x
  2. Step 2: Convert to fraction form
    15,716.30/21,666.11 = 12,501.41/x
  3. Step 3: Cross multiply
    15,716.30x = 21,666.11 × 12,501.41
  4. Step 4: Simplify right side
    15,716.30x = 270,856,753.38
  5. Step 5: Solve for x
    x = 270,856,753.38/15,716.30
  6. Step 6: Final answer
    x = 17,234.14

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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.