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Finding the Fourth Proportional to 20,372.76, 30,559.14 and 15,984.18

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Solution

The fourth proportional to 20,372.76, 30,559.14 and 15,984.18 is: 23,976.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.76 : 30,559.14 = 15,984.18 : x
  2. Step 2: Convert to fraction form
    20,372.76/30,559.14 = 15,984.18/x
  3. Step 3: Cross multiply
    20,372.76x = 30,559.14 × 15,984.18
  4. Step 4: Simplify right side
    20,372.76x = 488,462,794.41
  5. Step 5: Solve for x
    x = 488,462,794.41/20,372.76
  6. Step 6: Final answer
    x = 23,976.27

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Similar ratio
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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.