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Finding the Fourth Proportional to 20,551.10, 30,805.53 and 8,854.46

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Solution

The fourth proportional to 20,551.10, 30,805.53 and 8,854.46 is: 13,272.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.10 : 30,805.53 = 8,854.46 : x
  2. Step 2: Convert to fraction form
    20,551.10/30,805.53 = 8,854.46/x
  3. Step 3: Cross multiply
    20,551.10x = 30,805.53 × 8,854.46
  4. Step 4: Simplify right side
    20,551.10x = 272,766,333.16
  5. Step 5: Solve for x
    x = 272,766,333.16/20,551.10
  6. Step 6: Final answer
    x = 13,272.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.