Home / 28,904.28-43,356.44-8,127.78

Finding the Fourth Proportional to 28,904.28, 43,356.44 and 8,127.78

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Solution

The fourth proportional to 28,904.28, 43,356.44 and 8,127.78 is: 12,191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.28 : 43,356.44 = 8,127.78 : x
  2. Step 2: Convert to fraction form
    28,904.28/43,356.44 = 8,127.78/x
  3. Step 3: Cross multiply
    28,904.28x = 43,356.44 × 8,127.78
  4. Step 4: Simplify right side
    28,904.28x = 352,391,605.90
  5. Step 5: Solve for x
    x = 352,391,605.90/28,904.28
  6. Step 6: Final answer
    x = 12,191.68

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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.