Home / 15,363.26-21,201.36-8,649

Finding the Fourth Proportional to 15,363.26, 21,201.36 and 8,649

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Solution

The fourth proportional to 15,363.26, 21,201.36 and 8,649 is: 11,935.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.26 : 21,201.36 = 8,649 : x
  2. Step 2: Convert to fraction form
    15,363.26/21,201.36 = 8,649/x
  3. Step 3: Cross multiply
    15,363.26x = 21,201.36 × 8,649
  4. Step 4: Simplify right side
    15,363.26x = 183,370,562.64
  5. Step 5: Solve for x
    x = 183,370,562.64/15,363.26
  6. Step 6: Final answer
    x = 11,935.65

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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.