Home / 10,959.87-15,105.36-8,729.13

Finding the Fourth Proportional to 10,959.87, 15,105.36 and 8,729.13

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Solution

The fourth proportional to 10,959.87, 15,105.36 and 8,729.13 is: 12,030.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.87 : 15,105.36 = 8,729.13 : x
  2. Step 2: Convert to fraction form
    10,959.87/15,105.36 = 8,729.13/x
  3. Step 3: Cross multiply
    10,959.87x = 15,105.36 × 8,729.13
  4. Step 4: Simplify right side
    10,959.87x = 131,856,651.14
  5. Step 5: Solve for x
    x = 131,856,651.14/10,959.87
  6. Step 6: Final answer
    x = 12,030.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.