Home / 40,635.10-60,959.42-13,980

Finding the Fourth Proportional to 40,635.10, 60,959.42 and 13,980

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Solution

The fourth proportional to 40,635.10, 60,959.42 and 13,980 is: 20,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,635.10 : 60,959.42 = 13,980 : x
  2. Step 2: Convert to fraction form
    40,635.10/60,959.42 = 13,980/x
  3. Step 3: Cross multiply
    40,635.10x = 60,959.42 × 13,980
  4. Step 4: Simplify right side
    40,635.10x = 852,212,691.60
  5. Step 5: Solve for x
    x = 852,212,691.60/40,635.10
  6. Step 6: Final answer
    x = 20,972.33

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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.