Home / 42,231.28-63,339.62-12,641.18

Finding the Fourth Proportional to 42,231.28, 63,339.62 and 12,641.18

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Solution

The fourth proportional to 42,231.28, 63,339.62 and 12,641.18 is: 18,959.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,231.28 : 63,339.62 = 12,641.18 : x
  2. Step 2: Convert to fraction form
    42,231.28/63,339.62 = 12,641.18/x
  3. Step 3: Cross multiply
    42,231.28x = 63,339.62 × 12,641.18
  4. Step 4: Simplify right side
    42,231.28x = 800,687,537.55
  5. Step 5: Solve for x
    x = 800,687,537.55/42,231.28
  6. Step 6: Final answer
    x = 18,959.58

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1.5x scale

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.