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Finding the Fourth Proportional to 30,358.98, 45,534.15 and 13,737.78

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Solution

The fourth proportional to 30,358.98, 45,534.15 and 13,737.78 is: 20,604.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,358.98 : 45,534.15 = 13,737.78 : x
  2. Step 2: Convert to fraction form
    30,358.98/45,534.15 = 13,737.78/x
  3. Step 3: Cross multiply
    30,358.98x = 45,534.15 × 13,737.78
  4. Step 4: Simplify right side
    30,358.98x = 625,538,135.19
  5. Step 5: Solve for x
    x = 625,538,135.19/30,358.98
  6. Step 6: Final answer
    x = 20,604.72

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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.