Home / 28,091.74-42,143.68-8,371.88

Finding the Fourth Proportional to 28,091.74, 42,143.68 and 8,371.88

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Solution

The fourth proportional to 28,091.74, 42,143.68 and 8,371.88 is: 12,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.74 : 42,143.68 = 8,371.88 : x
  2. Step 2: Convert to fraction form
    28,091.74/42,143.68 = 8,371.88/x
  3. Step 3: Cross multiply
    28,091.74x = 42,143.68 × 8,371.88
  4. Step 4: Simplify right side
    28,091.74x = 352,821,831.72
  5. Step 5: Solve for x
    x = 352,821,831.72/28,091.74
  6. Step 6: Final answer
    x = 12,559.63

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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.