Home / 39,282.46-58,932.92-12,987.21

Finding the Fourth Proportional to 39,282.46, 58,932.92 and 12,987.21

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Solution

The fourth proportional to 39,282.46, 58,932.92 and 12,987.21 is: 19,483.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,282.46 : 58,932.92 = 12,987.21 : x
  2. Step 2: Convert to fraction form
    39,282.46/58,932.92 = 12,987.21/x
  3. Step 3: Cross multiply
    39,282.46x = 58,932.92 × 12,987.21
  4. Step 4: Simplify right side
    39,282.46x = 765,374,207.95
  5. Step 5: Solve for x
    x = 765,374,207.95/39,282.46
  6. Step 6: Final answer
    x = 19,483.87

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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.