Home / 25,432.78-38,156.10-12,285.16

Finding the Fourth Proportional to 25,432.78, 38,156.10 and 12,285.16

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Solution

The fourth proportional to 25,432.78, 38,156.10 and 12,285.16 is: 18,431.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,432.78 : 38,156.10 = 12,285.16 : x
  2. Step 2: Convert to fraction form
    25,432.78/38,156.10 = 12,285.16/x
  3. Step 3: Cross multiply
    25,432.78x = 38,156.10 × 12,285.16
  4. Step 4: Simplify right side
    25,432.78x = 468,753,793.48
  5. Step 5: Solve for x
    x = 468,753,793.48/25,432.78
  6. Step 6: Final answer
    x = 18,431.09

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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.