Home / 15,575.78-21,494.49-8,502.05

Finding the Fourth Proportional to 15,575.78, 21,494.49 and 8,502.05

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Solution

The fourth proportional to 15,575.78, 21,494.49 and 8,502.05 is: 11,732.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,575.78 : 21,494.49 = 8,502.05 : x
  2. Step 2: Convert to fraction form
    15,575.78/21,494.49 = 8,502.05/x
  3. Step 3: Cross multiply
    15,575.78x = 21,494.49 × 8,502.05
  4. Step 4: Simplify right side
    15,575.78x = 182,747,228.70
  5. Step 5: Solve for x
    x = 182,747,228.70/15,575.78
  6. Step 6: Final answer
    x = 11,732.78

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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.