Home / 12,456.32-18,687.51-3,571.82

Finding the Fourth Proportional to 12,456.32, 18,687.51 and 3,571.82

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Solution

The fourth proportional to 12,456.32, 18,687.51 and 3,571.82 is: 5,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.32 : 18,687.51 = 3,571.82 : x
  2. Step 2: Convert to fraction form
    12,456.32/18,687.51 = 3,571.82/x
  3. Step 3: Cross multiply
    12,456.32x = 18,687.51 × 3,571.82
  4. Step 4: Simplify right side
    12,456.32x = 66,748,421.97
  5. Step 5: Solve for x
    x = 66,748,421.97/12,456.32
  6. Step 6: Final answer
    x = 5,358.60

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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.