Home / 18,932.43-26,126.78-10,979.28

Finding the Fourth Proportional to 18,932.43, 26,126.78 and 10,979.28

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Solution

The fourth proportional to 18,932.43, 26,126.78 and 10,979.28 is: 15,151.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932.43 : 26,126.78 = 10,979.28 : x
  2. Step 2: Convert to fraction form
    18,932.43/26,126.78 = 10,979.28/x
  3. Step 3: Cross multiply
    18,932.43x = 26,126.78 × 10,979.28
  4. Step 4: Simplify right side
    18,932.43x = 286,853,178.22
  5. Step 5: Solve for x
    x = 286,853,178.22/18,932.43
  6. Step 6: Final answer
    x = 15,151.42

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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.