Home / 8,100.13-12,129.17-6,937.60

Finding the Fourth Proportional to 8,100.13, 12,129.17 and 6,937.60

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Solution

The fourth proportional to 8,100.13, 12,129.17 and 6,937.60 is: 10,388.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.13 : 12,129.17 = 6,937.60 : x
  2. Step 2: Convert to fraction form
    8,100.13/12,129.17 = 6,937.60/x
  3. Step 3: Cross multiply
    8,100.13x = 12,129.17 × 6,937.60
  4. Step 4: Simplify right side
    8,100.13x = 84,147,329.79
  5. Step 5: Solve for x
    x = 84,147,329.79/8,100.13
  6. Step 6: Final answer
    x = 10,388.39

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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.