Home / 18,969.28-26,176.12-11,012.09

Finding the Fourth Proportional to 18,969.28, 26,176.12 and 11,012.09

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Solution

The fourth proportional to 18,969.28, 26,176.12 and 11,012.09 is: 15,195.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.28 : 26,176.12 = 11,012.09 : x
  2. Step 2: Convert to fraction form
    18,969.28/26,176.12 = 11,012.09/x
  3. Step 3: Cross multiply
    18,969.28x = 26,176.12 × 11,012.09
  4. Step 4: Simplify right side
    18,969.28x = 288,253,789.29
  5. Step 5: Solve for x
    x = 288,253,789.29/18,969.28
  6. Step 6: Final answer
    x = 15,195.82

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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.