Home / 54,205.38-81,287.84-18,656.76

Finding the Fourth Proportional to 54,205.38, 81,287.84 and 18,656.76

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Solution

The fourth proportional to 54,205.38, 81,287.84 and 18,656.76 is: 27,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,205.38 : 81,287.84 = 18,656.76 : x
  2. Step 2: Convert to fraction form
    54,205.38/81,287.84 = 18,656.76/x
  3. Step 3: Cross multiply
    54,205.38x = 81,287.84 × 18,656.76
  4. Step 4: Simplify right side
    54,205.38x = 1,516,567,721.80
  5. Step 5: Solve for x
    x = 1,516,567,721.80/54,205.38
  6. Step 6: Final answer
    x = 27,978.18

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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.