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Finding the Fourth Proportional to 25,991.20, 38,986.80 and 16,098.40

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Solution

The fourth proportional to 25,991.20, 38,986.80 and 16,098.40 is: 24,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991.20 : 38,986.80 = 16,098.40 : x
  2. Step 2: Convert to fraction form
    25,991.20/38,986.80 = 16,098.40/x
  3. Step 3: Cross multiply
    25,991.20x = 38,986.80 × 16,098.40
  4. Step 4: Simplify right side
    25,991.20x = 627,625,101.12
  5. Step 5: Solve for x
    x = 627,625,101.12/25,991.20
  6. Step 6: Final answer
    x = 24,147.60

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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.