Home / 67,921.10-101,876.84-18,000.10

Finding the Fourth Proportional to 67,921.10, 101,876.84 and 18,000.10

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Solution

The fourth proportional to 67,921.10, 101,876.84 and 18,000.10 is: 26,998.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,921.10 : 101,876.84 = 18,000.10 : x
  2. Step 2: Convert to fraction form
    67,921.10/101,876.84 = 18,000.10/x
  3. Step 3: Cross multiply
    67,921.10x = 101,876.84 × 18,000.10
  4. Step 4: Simplify right side
    67,921.10x = 1,833,793,307.68
  5. Step 5: Solve for x
    x = 1,833,793,307.68/67,921.10
  6. Step 6: Final answer
    x = 26,998.88

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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.