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Finding the Fourth Proportional to 15,162.66, 20,923.92 and 8,874.90

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Solution

The fourth proportional to 15,162.66, 20,923.92 and 8,874.90 is: 12,247.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.66 : 20,923.92 = 8,874.90 : x
  2. Step 2: Convert to fraction form
    15,162.66/20,923.92 = 8,874.90/x
  3. Step 3: Cross multiply
    15,162.66x = 20,923.92 × 8,874.90
  4. Step 4: Simplify right side
    15,162.66x = 185,697,697.61
  5. Step 5: Solve for x
    x = 185,697,697.61/15,162.66
  6. Step 6: Final answer
    x = 12,247.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.