Home / 20,432.52-28,189.62-13,363.08

Finding the Fourth Proportional to 20,432.52, 28,189.62 and 13,363.08

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Solution

The fourth proportional to 20,432.52, 28,189.62 and 13,363.08 is: 18,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.52 : 28,189.62 = 13,363.08 : x
  2. Step 2: Convert to fraction form
    20,432.52/28,189.62 = 13,363.08/x
  3. Step 3: Cross multiply
    20,432.52x = 28,189.62 × 13,363.08
  4. Step 4: Simplify right side
    20,432.52x = 376,700,147.23
  5. Step 5: Solve for x
    x = 376,700,147.23/20,432.52
  6. Step 6: Final answer
    x = 18,436.30

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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.