Home / 42,422.96-63,648.11-12,843.79

Finding the Fourth Proportional to 42,422.96, 63,648.11 and 12,843.79

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Solution

The fourth proportional to 42,422.96, 63,648.11 and 12,843.79 is: 19,269.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,422.96 : 63,648.11 = 12,843.79 : x
  2. Step 2: Convert to fraction form
    42,422.96/63,648.11 = 12,843.79/x
  3. Step 3: Cross multiply
    42,422.96x = 63,648.11 × 12,843.79
  4. Step 4: Simplify right side
    42,422.96x = 817,482,831.73
  5. Step 5: Solve for x
    x = 817,482,831.73/42,422.96
  6. Step 6: Final answer
    x = 19,269.82

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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.