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Finding the Fourth Proportional to 13,387.74, 20,074.08 and 5,488.08

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Solution

The fourth proportional to 13,387.74, 20,074.08 and 5,488.08 is: 8,229.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.74 : 20,074.08 = 5,488.08 : x
  2. Step 2: Convert to fraction form
    13,387.74/20,074.08 = 5,488.08/x
  3. Step 3: Cross multiply
    13,387.74x = 20,074.08 × 5,488.08
  4. Step 4: Simplify right side
    13,387.74x = 110,168,156.97
  5. Step 5: Solve for x
    x = 110,168,156.97/13,387.74
  6. Step 6: Final answer
    x = 8,229.03

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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.