Home / 18,979.56-26,189.80-11,020.23

Finding the Fourth Proportional to 18,979.56, 26,189.80 and 11,020.23

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Solution

The fourth proportional to 18,979.56, 26,189.80 and 11,020.23 is: 15,206.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.56 : 26,189.80 = 11,020.23 : x
  2. Step 2: Convert to fraction form
    18,979.56/26,189.80 = 11,020.23/x
  3. Step 3: Cross multiply
    18,979.56x = 26,189.80 × 11,020.23
  4. Step 4: Simplify right side
    18,979.56x = 288,617,619.65
  5. Step 5: Solve for x
    x = 288,617,619.65/18,979.56
  6. Step 6: Final answer
    x = 15,206.76

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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.