Home / 42,238.68-63,348.84-12,648.57

Finding the Fourth Proportional to 42,238.68, 63,348.84 and 12,648.57

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Solution

The fourth proportional to 42,238.68, 63,348.84 and 12,648.57 is: 18,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,238.68 : 63,348.84 = 12,648.57 : x
  2. Step 2: Convert to fraction form
    42,238.68/63,348.84 = 12,648.57/x
  3. Step 3: Cross multiply
    42,238.68x = 63,348.84 × 12,648.57
  4. Step 4: Simplify right side
    42,238.68x = 801,272,237.16
  5. Step 5: Solve for x
    x = 801,272,237.16/42,238.68
  6. Step 6: Final answer
    x = 18,970.11

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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.