Home / 10,121.24-13,959.06-8,499.90

Finding the Fourth Proportional to 10,121.24, 13,959.06 and 8,499.90

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Solution

The fourth proportional to 10,121.24, 13,959.06 and 8,499.90 is: 11,722.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.24 : 13,959.06 = 8,499.90 : x
  2. Step 2: Convert to fraction form
    10,121.24/13,959.06 = 8,499.90/x
  3. Step 3: Cross multiply
    10,121.24x = 13,959.06 × 8,499.90
  4. Step 4: Simplify right side
    10,121.24x = 118,650,614.09
  5. Step 5: Solve for x
    x = 118,650,614.09/10,121.24
  6. Step 6: Final answer
    x = 11,722.93

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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.