Home / 12,139.29-18,180.09-6,201.63

Finding the Fourth Proportional to 12,139.29, 18,180.09 and 6,201.63

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Solution

The fourth proportional to 12,139.29, 18,180.09 and 6,201.63 is: 9,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.29 : 18,180.09 = 6,201.63 : x
  2. Step 2: Convert to fraction form
    12,139.29/18,180.09 = 6,201.63/x
  3. Step 3: Cross multiply
    12,139.29x = 18,180.09 × 6,201.63
  4. Step 4: Simplify right side
    12,139.29x = 112,746,191.55
  5. Step 5: Solve for x
    x = 112,746,191.55/12,139.29
  6. Step 6: Final answer
    x = 9,287.71

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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.