Home / 15,382.12-21,227.31-8,308.54

Finding the Fourth Proportional to 15,382.12, 21,227.31 and 8,308.54

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Solution

The fourth proportional to 15,382.12, 21,227.31 and 8,308.54 is: 11,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.12 : 21,227.31 = 8,308.54 : x
  2. Step 2: Convert to fraction form
    15,382.12/21,227.31 = 8,308.54/x
  3. Step 3: Cross multiply
    15,382.12x = 21,227.31 × 8,308.54
  4. Step 4: Simplify right side
    15,382.12x = 176,367,954.23
  5. Step 5: Solve for x
    x = 176,367,954.23/15,382.12
  6. Step 6: Final answer
    x = 11,465.78

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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.