Home / 15,138.72-22,659.60-8,101.20

Finding the Fourth Proportional to 15,138.72, 22,659.60 and 8,101.20

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Solution

The fourth proportional to 15,138.72, 22,659.60 and 8,101.20 is: 12,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.72 : 22,659.60 = 8,101.20 : x
  2. Step 2: Convert to fraction form
    15,138.72/22,659.60 = 8,101.20/x
  3. Step 3: Cross multiply
    15,138.72x = 22,659.60 × 8,101.20
  4. Step 4: Simplify right side
    15,138.72x = 183,569,951.52
  5. Step 5: Solve for x
    x = 183,569,951.52/15,138.72
  6. Step 6: Final answer
    x = 12,125.86

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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.