Home / 15,382.07-21,227.25-8,308.49

Finding the Fourth Proportional to 15,382.07, 21,227.25 and 8,308.49

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Solution

The fourth proportional to 15,382.07, 21,227.25 and 8,308.49 is: 11,465.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.07 : 21,227.25 = 8,308.49 : x
  2. Step 2: Convert to fraction form
    15,382.07/21,227.25 = 8,308.49/x
  3. Step 3: Cross multiply
    15,382.07x = 21,227.25 × 8,308.49
  4. Step 4: Simplify right side
    15,382.07x = 176,366,394.35
  5. Step 5: Solve for x
    x = 176,366,394.35/15,382.07
  6. Step 6: Final answer
    x = 11,465.71

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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.