Home / 8,780.03-13,150.17-6,791.69

Finding the Fourth Proportional to 8,780.03, 13,150.17 and 6,791.69

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Solution

The fourth proportional to 8,780.03, 13,150.17 and 6,791.69 is: 10,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.03 : 13,150.17 = 6,791.69 : x
  2. Step 2: Convert to fraction form
    8,780.03/13,150.17 = 6,791.69/x
  3. Step 3: Cross multiply
    8,780.03x = 13,150.17 × 6,791.69
  4. Step 4: Simplify right side
    8,780.03x = 89,311,812.34
  5. Step 5: Solve for x
    x = 89,311,812.34/8,780.03
  6. Step 6: Final answer
    x = 10,172.15

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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.