Home / 20,744.61-28,626.58-12,691.65

Finding the Fourth Proportional to 20,744.61, 28,626.58 and 12,691.65

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Solution

The fourth proportional to 20,744.61, 28,626.58 and 12,691.65 is: 17,513.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.61 : 28,626.58 = 12,691.65 : x
  2. Step 2: Convert to fraction form
    20,744.61/28,626.58 = 12,691.65/x
  3. Step 3: Cross multiply
    20,744.61x = 28,626.58 × 12,691.65
  4. Step 4: Simplify right side
    20,744.61x = 363,318,657.27
  5. Step 5: Solve for x
    x = 363,318,657.27/20,744.61
  6. Step 6: Final answer
    x = 17,513.89

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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.