Home / 15,229.78-21,017.37-8,514.69

Finding the Fourth Proportional to 15,229.78, 21,017.37 and 8,514.69

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Solution

The fourth proportional to 15,229.78, 21,017.37 and 8,514.69 is: 11,750.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,229.78 : 21,017.37 = 8,514.69 : x
  2. Step 2: Convert to fraction form
    15,229.78/21,017.37 = 8,514.69/x
  3. Step 3: Cross multiply
    15,229.78x = 21,017.37 × 8,514.69
  4. Step 4: Simplify right side
    15,229.78x = 178,956,390.17
  5. Step 5: Solve for x
    x = 178,956,390.17/15,229.78
  6. Step 6: Final answer
    x = 11,750.43

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Half scale
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Double scale
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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.