Home / 20,612.26-28,445.07-11,180.89

Finding the Fourth Proportional to 20,612.26, 28,445.07 and 11,180.89

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Solution

The fourth proportional to 20,612.26, 28,445.07 and 11,180.89 is: 15,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.26 : 28,445.07 = 11,180.89 : x
  2. Step 2: Convert to fraction form
    20,612.26/28,445.07 = 11,180.89/x
  3. Step 3: Cross multiply
    20,612.26x = 28,445.07 × 11,180.89
  4. Step 4: Simplify right side
    20,612.26x = 318,041,198.71
  5. Step 5: Solve for x
    x = 318,041,198.71/20,612.26
  6. Step 6: Final answer
    x = 15,429.71

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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.