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Finding the Fourth Proportional to 14,665.11, 20,238.11 and 8,377.53

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Solution

The fourth proportional to 14,665.11, 20,238.11 and 8,377.53 is: 11,561.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,665.11 : 20,238.11 = 8,377.53 : x
  2. Step 2: Convert to fraction form
    14,665.11/20,238.11 = 8,377.53/x
  3. Step 3: Cross multiply
    14,665.11x = 20,238.11 × 8,377.53
  4. Step 4: Simplify right side
    14,665.11x = 169,545,373.67
  5. Step 5: Solve for x
    x = 169,545,373.67/14,665.11
  6. Step 6: Final answer
    x = 11,561.14

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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.