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Finding the Fourth Proportional to 14,773.72, 20,387.64 and 8,059.21

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Solution

The fourth proportional to 14,773.72, 20,387.64 and 8,059.21 is: 11,121.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,773.72 : 20,387.64 = 8,059.21 : x
  2. Step 2: Convert to fraction form
    14,773.72/20,387.64 = 8,059.21/x
  3. Step 3: Cross multiply
    14,773.72x = 20,387.64 × 8,059.21
  4. Step 4: Simplify right side
    14,773.72x = 164,308,272.16
  5. Step 5: Solve for x
    x = 164,308,272.16/14,773.72
  6. Step 6: Final answer
    x = 11,121.66

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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.