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Finding the Fourth Proportional to 14,811.01, 20,437.40 and 8,437.61

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Solution

The fourth proportional to 14,811.01, 20,437.40 and 8,437.61 is: 11,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,811.01 : 20,437.40 = 8,437.61 : x
  2. Step 2: Convert to fraction form
    14,811.01/20,437.40 = 8,437.61/x
  3. Step 3: Cross multiply
    14,811.01x = 20,437.40 × 8,437.61
  4. Step 4: Simplify right side
    14,811.01x = 172,442,882.80
  5. Step 5: Solve for x
    x = 172,442,882.80/14,811.01
  6. Step 6: Final answer
    x = 11,642.89

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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.