Home / 42,531.57-63,795.20-12,948.75

Finding the Fourth Proportional to 42,531.57, 63,795.20 and 12,948.75

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Solution

The fourth proportional to 42,531.57, 63,795.20 and 12,948.75 is: 19,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,531.57 : 63,795.20 = 12,948.75 : x
  2. Step 2: Convert to fraction form
    42,531.57/63,795.20 = 12,948.75/x
  3. Step 3: Cross multiply
    42,531.57x = 63,795.20 × 12,948.75
  4. Step 4: Simplify right side
    42,531.57x = 826,068,031.26
  5. Step 5: Solve for x
    x = 826,068,031.26/42,531.57
  6. Step 6: Final answer
    x = 19,422.47

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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.