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Finding the Fourth Proportional to 13,374.72, 20,074.86 and 6,454.08

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Solution

The fourth proportional to 13,374.72, 20,074.86 and 6,454.08 is: 9,687.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.72 : 20,074.86 = 6,454.08 : x
  2. Step 2: Convert to fraction form
    13,374.72/20,074.86 = 6,454.08/x
  3. Step 3: Cross multiply
    13,374.72x = 20,074.86 × 6,454.08
  4. Step 4: Simplify right side
    13,374.72x = 129,564,752.43
  5. Step 5: Solve for x
    x = 129,564,752.43/13,374.72
  6. Step 6: Final answer
    x = 9,687.29

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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.