Home / 42,540.60-63,813.30-12,959.40

Finding the Fourth Proportional to 42,540.60, 63,813.30 and 12,959.40

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Solution

The fourth proportional to 42,540.60, 63,813.30 and 12,959.40 is: 19,439.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.60 : 63,813.30 = 12,959.40 : x
  2. Step 2: Convert to fraction form
    42,540.60/63,813.30 = 12,959.40/x
  3. Step 3: Cross multiply
    42,540.60x = 63,813.30 × 12,959.40
  4. Step 4: Simplify right side
    42,540.60x = 826,982,080.02
  5. Step 5: Solve for x
    x = 826,982,080.02/42,540.60
  6. Step 6: Final answer
    x = 19,439.83

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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.