Home / 28,134.20-42,185.72-11,505.91

Finding the Fourth Proportional to 28,134.20, 42,185.72 and 11,505.91

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Solution

The fourth proportional to 28,134.20, 42,185.72 and 11,505.91 is: 17,252.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.20 : 42,185.72 = 11,505.91 : x
  2. Step 2: Convert to fraction form
    28,134.20/42,185.72 = 11,505.91/x
  3. Step 3: Cross multiply
    28,134.20x = 42,185.72 × 11,505.91
  4. Step 4: Simplify right side
    28,134.20x = 485,384,946.47
  5. Step 5: Solve for x
    x = 485,384,946.47/28,134.20
  6. Step 6: Final answer
    x = 17,252.49

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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.