Home / 16,972.80-25,387.20-15,230.40

Finding the Fourth Proportional to 16,972.80, 25,387.20 and 15,230.40

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Solution

The fourth proportional to 16,972.80, 25,387.20 and 15,230.40 is: 22,780.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,972.80 : 25,387.20 = 15,230.40 : x
  2. Step 2: Convert to fraction form
    16,972.80/25,387.20 = 15,230.40/x
  3. Step 3: Cross multiply
    16,972.80x = 25,387.20 × 15,230.40
  4. Step 4: Simplify right side
    16,972.80x = 386,657,210.88
  5. Step 5: Solve for x
    x = 386,657,210.88/16,972.80
  6. Step 6: Final answer
    x = 22,780.99

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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.