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Finding the Fourth Proportional to 15,043.52, 20,766.85 and 9,673.76

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Solution

The fourth proportional to 15,043.52, 20,766.85 and 9,673.76 is: 13,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.52 : 20,766.85 = 9,673.76 : x
  2. Step 2: Convert to fraction form
    15,043.52/20,766.85 = 9,673.76/x
  3. Step 3: Cross multiply
    15,043.52x = 20,766.85 × 9,673.76
  4. Step 4: Simplify right side
    15,043.52x = 200,893,550.59
  5. Step 5: Solve for x
    x = 200,893,550.59/15,043.52
  6. Step 6: Final answer
    x = 13,354.16

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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.