Home / 13,172.28-19,761.86-5,778.19

Finding the Fourth Proportional to 13,172.28, 19,761.86 and 5,778.19

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Solution

The fourth proportional to 13,172.28, 19,761.86 and 5,778.19 is: 8,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.28 : 19,761.86 = 5,778.19 : x
  2. Step 2: Convert to fraction form
    13,172.28/19,761.86 = 5,778.19/x
  3. Step 3: Cross multiply
    13,172.28x = 19,761.86 × 5,778.19
  4. Step 4: Simplify right side
    13,172.28x = 114,187,781.83
  5. Step 5: Solve for x
    x = 114,187,781.83/13,172.28
  6. Step 6: Final answer
    x = 8,668.79

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1.5x scale

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.