Home / 18,642.47-27,966.42-11,616.72

Finding the Fourth Proportional to 18,642.47, 27,966.42 and 11,616.72

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Solution

The fourth proportional to 18,642.47, 27,966.42 and 11,616.72 is: 17,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.47 : 27,966.42 = 11,616.72 : x
  2. Step 2: Convert to fraction form
    18,642.47/27,966.42 = 11,616.72/x
  3. Step 3: Cross multiply
    18,642.47x = 27,966.42 × 11,616.72
  4. Step 4: Simplify right side
    18,642.47x = 324,878,070.54
  5. Step 5: Solve for x
    x = 324,878,070.54/18,642.47
  6. Step 6: Final answer
    x = 17,426.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.