Home / 12,876.80-19,316.16-5,480.48

Finding the Fourth Proportional to 12,876.80, 19,316.16 and 5,480.48

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Solution

The fourth proportional to 12,876.80, 19,316.16 and 5,480.48 is: 8,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.80 : 19,316.16 = 5,480.48 : x
  2. Step 2: Convert to fraction form
    12,876.80/19,316.16 = 5,480.48/x
  3. Step 3: Cross multiply
    12,876.80x = 19,316.16 × 5,480.48
  4. Step 4: Simplify right side
    12,876.80x = 105,861,828.56
  5. Step 5: Solve for x
    x = 105,861,828.56/12,876.80
  6. Step 6: Final answer
    x = 8,221.13

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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.