Home / 25,344.20-38,016.30-11,520.20

Finding the Fourth Proportional to 25,344.20, 38,016.30 and 11,520.20

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Solution

The fourth proportional to 25,344.20, 38,016.30 and 11,520.20 is: 17,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,344.20 : 38,016.30 = 11,520.20 : x
  2. Step 2: Convert to fraction form
    25,344.20/38,016.30 = 11,520.20/x
  3. Step 3: Cross multiply
    25,344.20x = 38,016.30 × 11,520.20
  4. Step 4: Simplify right side
    25,344.20x = 437,955,379.26
  5. Step 5: Solve for x
    x = 437,955,379.26/25,344.20
  6. Step 6: Final answer
    x = 17,280.30

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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.