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Finding the Fourth Proportional to 18,079.81, 24,948.20 and 10,120.95

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Solution

The fourth proportional to 18,079.81, 24,948.20 and 10,120.95 is: 13,965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,079.81 : 24,948.20 = 10,120.95 : x
  2. Step 2: Convert to fraction form
    18,079.81/24,948.20 = 10,120.95/x
  3. Step 3: Cross multiply
    18,079.81x = 24,948.20 × 10,120.95
  4. Step 4: Simplify right side
    18,079.81x = 252,499,510.09
  5. Step 5: Solve for x
    x = 252,499,510.09/18,079.81
  6. Step 6: Final answer
    x = 13,965.83

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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.