Home / 15,382.36-21,227.67-8,308.78

Finding the Fourth Proportional to 15,382.36, 21,227.67 and 8,308.78

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Solution

The fourth proportional to 15,382.36, 21,227.67 and 8,308.78 is: 11,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.36 : 21,227.67 = 8,308.78 : x
  2. Step 2: Convert to fraction form
    15,382.36/21,227.67 = 8,308.78/x
  3. Step 3: Cross multiply
    15,382.36x = 21,227.67 × 8,308.78
  4. Step 4: Simplify right side
    15,382.36x = 176,376,039.94
  5. Step 5: Solve for x
    x = 176,376,039.94/15,382.36
  6. Step 6: Final answer
    x = 11,466.12

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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.