Home / 40,818.28-61,229.82-12,742.36

Finding the Fourth Proportional to 40,818.28, 61,229.82 and 12,742.36

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Solution

The fourth proportional to 40,818.28, 61,229.82 and 12,742.36 is: 19,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,818.28 : 61,229.82 = 12,742.36 : x
  2. Step 2: Convert to fraction form
    40,818.28/61,229.82 = 12,742.36/x
  3. Step 3: Cross multiply
    40,818.28x = 61,229.82 × 12,742.36
  4. Step 4: Simplify right side
    40,818.28x = 780,212,409.18
  5. Step 5: Solve for x
    x = 780,212,409.18/40,818.28
  6. Step 6: Final answer
    x = 19,114.29

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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.