Home / 20,432.52-28,223.82-15,154.56

Finding the Fourth Proportional to 20,432.52, 28,223.82 and 15,154.56

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Solution

The fourth proportional to 20,432.52, 28,223.82 and 15,154.56 is: 20,933.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.52 : 28,223.82 = 15,154.56 : x
  2. Step 2: Convert to fraction form
    20,432.52/28,223.82 = 15,154.56/x
  3. Step 3: Cross multiply
    20,432.52x = 28,223.82 × 15,154.56
  4. Step 4: Simplify right side
    20,432.52x = 427,719,573.62
  5. Step 5: Solve for x
    x = 427,719,573.62/20,432.52
  6. Step 6: Final answer
    x = 20,933.28

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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.