Home / 12,180.18-18,275.84-6,625.20

Finding the Fourth Proportional to 12,180.18, 18,275.84 and 6,625.20

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Solution

The fourth proportional to 12,180.18, 18,275.84 and 6,625.20 is: 9,940.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.18 : 18,275.84 = 6,625.20 : x
  2. Step 2: Convert to fraction form
    12,180.18/18,275.84 = 6,625.20/x
  3. Step 3: Cross multiply
    12,180.18x = 18,275.84 × 6,625.20
  4. Step 4: Simplify right side
    12,180.18x = 121,081,095.17
  5. Step 5: Solve for x
    x = 121,081,095.17/12,180.18
  6. Step 6: Final answer
    x = 9,940.83

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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.