Home / 12,320.71-18,454.22-8,099.20

Finding the Fourth Proportional to 12,320.71, 18,454.22 and 8,099.20

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Solution

The fourth proportional to 12,320.71, 18,454.22 and 8,099.20 is: 12,131.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.71 : 18,454.22 = 8,099.20 : x
  2. Step 2: Convert to fraction form
    12,320.71/18,454.22 = 8,099.20/x
  3. Step 3: Cross multiply
    12,320.71x = 18,454.22 × 8,099.20
  4. Step 4: Simplify right side
    12,320.71x = 149,464,418.62
  5. Step 5: Solve for x
    x = 149,464,418.62/12,320.71
  6. Step 6: Final answer
    x = 12,131.15

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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.