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Finding the Fourth Proportional to 14,773.16, 20,390.46 and 8,489.18

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Solution

The fourth proportional to 14,773.16, 20,390.46 and 8,489.18 is: 11,717.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,773.16 : 20,390.46 = 8,489.18 : x
  2. Step 2: Convert to fraction form
    14,773.16/20,390.46 = 8,489.18/x
  3. Step 3: Cross multiply
    14,773.16x = 20,390.46 × 8,489.18
  4. Step 4: Simplify right side
    14,773.16x = 173,098,285.22
  5. Step 5: Solve for x
    x = 173,098,285.22/14,773.16
  6. Step 6: Final answer
    x = 11,717.08

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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.