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Finding the Fourth Proportional to 14,815.38, 20,445 and 8,845.92

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Solution

The fourth proportional to 14,815.38, 20,445 and 8,845.92 is: 12,207.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.38 : 20,445 = 8,845.92 : x
  2. Step 2: Convert to fraction form
    14,815.38/20,445 = 8,845.92/x
  3. Step 3: Cross multiply
    14,815.38x = 20,445 × 8,845.92
  4. Step 4: Simplify right side
    14,815.38x = 180,854,834.40
  5. Step 5: Solve for x
    x = 180,854,834.40/14,815.38
  6. Step 6: Final answer
    x = 12,207.24

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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.