Home / 12,615.38-18,922.98-3,254.61

Finding the Fourth Proportional to 12,615.38, 18,922.98 and 3,254.61

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Solution

The fourth proportional to 12,615.38, 18,922.98 and 3,254.61 is: 4,881.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.38 : 18,922.98 = 3,254.61 : x
  2. Step 2: Convert to fraction form
    12,615.38/18,922.98 = 3,254.61/x
  3. Step 3: Cross multiply
    12,615.38x = 18,922.98 × 3,254.61
  4. Step 4: Simplify right side
    12,615.38x = 61,586,829.71
  5. Step 5: Solve for x
    x = 61,586,829.71/12,615.38
  6. Step 6: Final answer
    x = 4,881.88

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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.