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Finding the Fourth Proportional to 11,492.42, 15,859.82 and 6,456.65

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Solution

The fourth proportional to 11,492.42, 15,859.82 and 6,456.65 is: 8,910.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,492.42 : 15,859.82 = 6,456.65 : x
  2. Step 2: Convert to fraction form
    11,492.42/15,859.82 = 6,456.65/x
  3. Step 3: Cross multiply
    11,492.42x = 15,859.82 × 6,456.65
  4. Step 4: Simplify right side
    11,492.42x = 102,401,306.80
  5. Step 5: Solve for x
    x = 102,401,306.80/11,492.42
  6. Step 6: Final answer
    x = 8,910.33

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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.