Home / 28,118.97-38,789.10-18,549.39

Finding the Fourth Proportional to 28,118.97, 38,789.10 and 18,549.39

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Solution

The fourth proportional to 28,118.97, 38,789.10 and 18,549.39 is: 25,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.97 : 38,789.10 = 18,549.39 : x
  2. Step 2: Convert to fraction form
    28,118.97/38,789.10 = 18,549.39/x
  3. Step 3: Cross multiply
    28,118.97x = 38,789.10 × 18,549.39
  4. Step 4: Simplify right side
    28,118.97x = 719,514,143.65
  5. Step 5: Solve for x
    x = 719,514,143.65/28,118.97
  6. Step 6: Final answer
    x = 25,588.21

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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.