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Finding the Fourth Proportional to 11,508.84, 15,882.48 and 6,404.42

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Solution

The fourth proportional to 11,508.84, 15,882.48 and 6,404.42 is: 8,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.84 : 15,882.48 = 6,404.42 : x
  2. Step 2: Convert to fraction form
    11,508.84/15,882.48 = 6,404.42/x
  3. Step 3: Cross multiply
    11,508.84x = 15,882.48 × 6,404.42
  4. Step 4: Simplify right side
    11,508.84x = 101,718,040.54
  5. Step 5: Solve for x
    x = 101,718,040.54/11,508.84
  6. Step 6: Final answer
    x = 8,838.25

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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.