Home / 42,278.35-63,378.30-15,609.61

Finding the Fourth Proportional to 42,278.35, 63,378.30 and 15,609.61

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Solution

The fourth proportional to 42,278.35, 63,378.30 and 15,609.61 is: 23,399.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,278.35 : 63,378.30 = 15,609.61 : x
  2. Step 2: Convert to fraction form
    42,278.35/63,378.30 = 15,609.61/x
  3. Step 3: Cross multiply
    42,278.35x = 63,378.30 × 15,609.61
  4. Step 4: Simplify right side
    42,278.35x = 989,310,545.46
  5. Step 5: Solve for x
    x = 989,310,545.46/42,278.35
  6. Step 6: Final answer
    x = 23,399.93

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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.