Home / 19,717.20-29,548.80-12,675.60

Finding the Fourth Proportional to 19,717.20, 29,548.80 and 12,675.60

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Solution

The fourth proportional to 19,717.20, 29,548.80 and 12,675.60 is: 18,996.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,717.20 : 29,548.80 = 12,675.60 : x
  2. Step 2: Convert to fraction form
    19,717.20/29,548.80 = 12,675.60/x
  3. Step 3: Cross multiply
    19,717.20x = 29,548.80 × 12,675.60
  4. Step 4: Simplify right side
    19,717.20x = 374,548,769.28
  5. Step 5: Solve for x
    x = 374,548,769.28/19,717.20
  6. Step 6: Final answer
    x = 18,996.04

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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.