Home / 18,979.43-26,189.63-11,020.10

Finding the Fourth Proportional to 18,979.43, 26,189.63 and 11,020.10

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Solution

The fourth proportional to 18,979.43, 26,189.63 and 11,020.10 is: 15,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.43 : 26,189.63 = 11,020.10 : x
  2. Step 2: Convert to fraction form
    18,979.43/26,189.63 = 11,020.10/x
  3. Step 3: Cross multiply
    18,979.43x = 26,189.63 × 11,020.10
  4. Step 4: Simplify right side
    18,979.43x = 288,612,393.26
  5. Step 5: Solve for x
    x = 288,612,393.26/18,979.43
  6. Step 6: Final answer
    x = 15,206.59

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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.