Home / 20,109.52-30,136.92-15,175.04

Finding the Fourth Proportional to 20,109.52, 30,136.92 and 15,175.04

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Solution

The fourth proportional to 20,109.52, 30,136.92 and 15,175.04 is: 22,741.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.52 : 30,136.92 = 15,175.04 : x
  2. Step 2: Convert to fraction form
    20,109.52/30,136.92 = 15,175.04/x
  3. Step 3: Cross multiply
    20,109.52x = 30,136.92 × 15,175.04
  4. Step 4: Simplify right side
    20,109.52x = 457,328,966.48
  5. Step 5: Solve for x
    x = 457,328,966.48/20,109.52
  6. Step 6: Final answer
    x = 22,741.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.