Home / 42,452.56-63,690.36-12,871.36

Finding the Fourth Proportional to 42,452.56, 63,690.36 and 12,871.36

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Solution

The fourth proportional to 42,452.56, 63,690.36 and 12,871.36 is: 19,310.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,452.56 : 63,690.36 = 12,871.36 : x
  2. Step 2: Convert to fraction form
    42,452.56/63,690.36 = 12,871.36/x
  3. Step 3: Cross multiply
    42,452.56x = 63,690.36 × 12,871.36
  4. Step 4: Simplify right side
    42,452.56x = 819,781,552.09
  5. Step 5: Solve for x
    x = 819,781,552.09/42,452.56
  6. Step 6: Final answer
    x = 19,310.53

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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.