Home / 18,979.06-26,189.11-11,019.73

Finding the Fourth Proportional to 18,979.06, 26,189.11 and 11,019.73

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Solution

The fourth proportional to 18,979.06, 26,189.11 and 11,019.73 is: 15,206.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.06 : 26,189.11 = 11,019.73 : x
  2. Step 2: Convert to fraction form
    18,979.06/26,189.11 = 11,019.73/x
  3. Step 3: Cross multiply
    18,979.06x = 26,189.11 × 11,019.73
  4. Step 4: Simplify right side
    18,979.06x = 288,596,869.44
  5. Step 5: Solve for x
    x = 288,596,869.44/18,979.06
  6. Step 6: Final answer
    x = 15,206.07

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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.