Home / 20,117.12-30,224.88-18,998.10

Finding the Fourth Proportional to 20,117.12, 30,224.88 and 18,998.10

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Solution

The fourth proportional to 20,117.12, 30,224.88 and 18,998.10 is: 28,543.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.12 : 30,224.88 = 18,998.10 : x
  2. Step 2: Convert to fraction form
    20,117.12/30,224.88 = 18,998.10/x
  3. Step 3: Cross multiply
    20,117.12x = 30,224.88 × 18,998.10
  4. Step 4: Simplify right side
    20,117.12x = 574,215,292.73
  5. Step 5: Solve for x
    x = 574,215,292.73/20,117.12
  6. Step 6: Final answer
    x = 28,543.61

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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.