Home / 11,959.28-18,008.39-8,861.23

Finding the Fourth Proportional to 11,959.28, 18,008.39 and 8,861.23

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Solution

The fourth proportional to 11,959.28, 18,008.39 and 8,861.23 is: 13,343.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.28 : 18,008.39 = 8,861.23 : x
  2. Step 2: Convert to fraction form
    11,959.28/18,008.39 = 8,861.23/x
  3. Step 3: Cross multiply
    11,959.28x = 18,008.39 × 8,861.23
  4. Step 4: Simplify right side
    11,959.28x = 159,576,530.38
  5. Step 5: Solve for x
    x = 159,576,530.38/11,959.28
  6. Step 6: Final answer
    x = 13,343.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.