Home / 15,138.70-22,686.45-11,158.90

Finding the Fourth Proportional to 15,138.70, 22,686.45 and 11,158.90

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Solution

The fourth proportional to 15,138.70, 22,686.45 and 11,158.90 is: 16,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.70 : 22,686.45 = 11,158.90 : x
  2. Step 2: Convert to fraction form
    15,138.70/22,686.45 = 11,158.90/x
  3. Step 3: Cross multiply
    15,138.70x = 22,686.45 × 11,158.90
  4. Step 4: Simplify right side
    15,138.70x = 253,155,826.91
  5. Step 5: Solve for x
    x = 253,155,826.91/15,138.70
  6. Step 6: Final answer
    x = 16,722.43

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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.