Home / 42,128.19-63,198.77-15,834.78

Finding the Fourth Proportional to 42,128.19, 63,198.77 and 15,834.78

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Solution

The fourth proportional to 42,128.19, 63,198.77 and 15,834.78 is: 23,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,128.19 : 63,198.77 = 15,834.78 : x
  2. Step 2: Convert to fraction form
    42,128.19/63,198.77 = 15,834.78/x
  3. Step 3: Cross multiply
    42,128.19x = 63,198.77 × 15,834.78
  4. Step 4: Simplify right side
    42,128.19x = 1,000,738,540.05
  5. Step 5: Solve for x
    x = 1,000,738,540.05/42,128.19
  6. Step 6: Final answer
    x = 23,754.61

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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.