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Finding the Fourth Proportional to 20,123.58, 30,229.10 and 13,562.58

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Solution

The fourth proportional to 20,123.58, 30,229.10 and 13,562.58 is: 20,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.58 : 30,229.10 = 13,562.58 : x
  2. Step 2: Convert to fraction form
    20,123.58/30,229.10 = 13,562.58/x
  3. Step 3: Cross multiply
    20,123.58x = 30,229.10 × 13,562.58
  4. Step 4: Simplify right side
    20,123.58x = 409,984,587.08
  5. Step 5: Solve for x
    x = 409,984,587.08/20,123.58
  6. Step 6: Final answer
    x = 20,373.34

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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.