Home / 25,428.90-38,132.55-12,285.30

Finding the Fourth Proportional to 25,428.90, 38,132.55 and 12,285.30

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Solution

The fourth proportional to 25,428.90, 38,132.55 and 12,285.30 is: 18,422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428.90 : 38,132.55 = 12,285.30 : x
  2. Step 2: Convert to fraction form
    25,428.90/38,132.55 = 12,285.30/x
  3. Step 3: Cross multiply
    25,428.90x = 38,132.55 × 12,285.30
  4. Step 4: Simplify right side
    25,428.90x = 468,469,816.52
  5. Step 5: Solve for x
    x = 468,469,816.52/25,428.90
  6. Step 6: Final answer
    x = 18,422.73

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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.