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Finding the Fourth Proportional to 13,572.64, 20,352.27 and 6,454.90

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Solution

The fourth proportional to 13,572.64, 20,352.27 and 6,454.90 is: 9,679.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.64 : 20,352.27 = 6,454.90 : x
  2. Step 2: Convert to fraction form
    13,572.64/20,352.27 = 6,454.90/x
  3. Step 3: Cross multiply
    13,572.64x = 20,352.27 × 6,454.90
  4. Step 4: Simplify right side
    13,572.64x = 131,371,765.86
  5. Step 5: Solve for x
    x = 131,371,765.86/13,572.64
  6. Step 6: Final answer
    x = 9,679.16

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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.