Home / 18,854.31-28,293.38-10,539.78

Finding the Fourth Proportional to 18,854.31, 28,293.38 and 10,539.78

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Solution

The fourth proportional to 18,854.31, 28,293.38 and 10,539.78 is: 15,816.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.31 : 28,293.38 = 10,539.78 : x
  2. Step 2: Convert to fraction form
    18,854.31/28,293.38 = 10,539.78/x
  3. Step 3: Cross multiply
    18,854.31x = 28,293.38 × 10,539.78
  4. Step 4: Simplify right side
    18,854.31x = 298,206,000.66
  5. Step 5: Solve for x
    x = 298,206,000.66/18,854.31
  6. Step 6: Final answer
    x = 15,816.33

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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.