Home / 15,042.43-20,759.31-8,328.79

Finding the Fourth Proportional to 15,042.43, 20,759.31 and 8,328.79

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Solution

The fourth proportional to 15,042.43, 20,759.31 and 8,328.79 is: 11,494.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.43 : 20,759.31 = 8,328.79 : x
  2. Step 2: Convert to fraction form
    15,042.43/20,759.31 = 8,328.79/x
  3. Step 3: Cross multiply
    15,042.43x = 20,759.31 × 8,328.79
  4. Step 4: Simplify right side
    15,042.43x = 172,899,982.91
  5. Step 5: Solve for x
    x = 172,899,982.91/15,042.43
  6. Step 6: Final answer
    x = 11,494.16

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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.