Home / 20,505.38-28,297.52-11,553.02

Finding the Fourth Proportional to 20,505.38, 28,297.52 and 11,553.02

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Solution

The fourth proportional to 20,505.38, 28,297.52 and 11,553.02 is: 15,943.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.38 : 28,297.52 = 11,553.02 : x
  2. Step 2: Convert to fraction form
    20,505.38/28,297.52 = 11,553.02/x
  3. Step 3: Cross multiply
    20,505.38x = 28,297.52 × 11,553.02
  4. Step 4: Simplify right side
    20,505.38x = 326,921,756.75
  5. Step 5: Solve for x
    x = 326,921,756.75/20,505.38
  6. Step 6: Final answer
    x = 15,943.22

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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.