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Finding the Fourth Proportional to 14,644.85, 20,207.71 and 8,899.31

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Solution

The fourth proportional to 14,644.85, 20,207.71 and 8,899.31 is: 12,279.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,644.85 : 20,207.71 = 8,899.31 : x
  2. Step 2: Convert to fraction form
    14,644.85/20,207.71 = 8,899.31/x
  3. Step 3: Cross multiply
    14,644.85x = 20,207.71 × 8,899.31
  4. Step 4: Simplify right side
    14,644.85x = 179,834,675.68
  5. Step 5: Solve for x
    x = 179,834,675.68/14,644.85
  6. Step 6: Final answer
    x = 12,279.72

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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.