Home / 15,229.89-21,015.90-8,514.63

Finding the Fourth Proportional to 15,229.89, 21,015.90 and 8,514.63

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Solution

The fourth proportional to 15,229.89, 21,015.90 and 8,514.63 is: 11,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,229.89 : 21,015.90 = 8,514.63 : x
  2. Step 2: Convert to fraction form
    15,229.89/21,015.90 = 8,514.63/x
  3. Step 3: Cross multiply
    15,229.89x = 21,015.90 × 8,514.63
  4. Step 4: Simplify right side
    15,229.89x = 178,942,612.62
  5. Step 5: Solve for x
    x = 178,942,612.62/15,229.89
  6. Step 6: Final answer
    x = 11,749.44

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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.