Home / 12,687.12-19,031.88-3,327.24

Finding the Fourth Proportional to 12,687.12, 19,031.88 and 3,327.24

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Solution

The fourth proportional to 12,687.12, 19,031.88 and 3,327.24 is: 4,991.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.12 : 19,031.88 = 3,327.24 : x
  2. Step 2: Convert to fraction form
    12,687.12/19,031.88 = 3,327.24/x
  3. Step 3: Cross multiply
    12,687.12x = 19,031.88 × 3,327.24
  4. Step 4: Simplify right side
    12,687.12x = 63,323,632.41
  5. Step 5: Solve for x
    x = 63,323,632.41/12,687.12
  6. Step 6: Final answer
    x = 4,991.17

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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.