Home / 19,878.60-29,806.56-8,177.88

Finding the Fourth Proportional to 19,878.60, 29,806.56 and 8,177.88

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Solution

The fourth proportional to 19,878.60, 29,806.56 and 8,177.88 is: 12,262.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.60 : 29,806.56 = 8,177.88 : x
  2. Step 2: Convert to fraction form
    19,878.60/29,806.56 = 8,177.88/x
  3. Step 3: Cross multiply
    19,878.60x = 29,806.56 × 8,177.88
  4. Step 4: Simplify right side
    19,878.60x = 243,754,470.89
  5. Step 5: Solve for x
    x = 243,754,470.89/19,878.60
  6. Step 6: Final answer
    x = 12,262.15

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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.