Home / 28,168.20-38,883.78-18,097.20

Finding the Fourth Proportional to 28,168.20, 38,883.78 and 18,097.20

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Solution

The fourth proportional to 28,168.20, 38,883.78 and 18,097.20 is: 24,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.20 : 38,883.78 = 18,097.20 : x
  2. Step 2: Convert to fraction form
    28,168.20/38,883.78 = 18,097.20/x
  3. Step 3: Cross multiply
    28,168.20x = 38,883.78 × 18,097.20
  4. Step 4: Simplify right side
    28,168.20x = 703,687,543.42
  5. Step 5: Solve for x
    x = 703,687,543.42/28,168.20
  6. Step 6: Final answer
    x = 24,981.63

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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.