Home / 28,120.28-42,166.54-9,393.88

Finding the Fourth Proportional to 28,120.28, 42,166.54 and 9,393.88

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Solution

The fourth proportional to 28,120.28, 42,166.54 and 9,393.88 is: 14,086.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.28 : 42,166.54 = 9,393.88 : x
  2. Step 2: Convert to fraction form
    28,120.28/42,166.54 = 9,393.88/x
  3. Step 3: Cross multiply
    28,120.28x = 42,166.54 × 9,393.88
  4. Step 4: Simplify right side
    28,120.28x = 396,107,416.78
  5. Step 5: Solve for x
    x = 396,107,416.78/28,120.28
  6. Step 6: Final answer
    x = 14,086.18

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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.