Home / 20,432.74-28,197.20-11,480.24

Finding the Fourth Proportional to 20,432.74, 28,197.20 and 11,480.24

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Solution

The fourth proportional to 20,432.74, 28,197.20 and 11,480.24 is: 15,842.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.74 : 28,197.20 = 11,480.24 : x
  2. Step 2: Convert to fraction form
    20,432.74/28,197.20 = 11,480.24/x
  3. Step 3: Cross multiply
    20,432.74x = 28,197.20 × 11,480.24
  4. Step 4: Simplify right side
    20,432.74x = 323,710,511.04
  5. Step 5: Solve for x
    x = 323,710,511.04/20,432.74
  6. Step 6: Final answer
    x = 15,842.74

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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.