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Finding the Fourth Proportional to 10,808.78, 16,213.14 and 4,230.35

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Solution

The fourth proportional to 10,808.78, 16,213.14 and 4,230.35 is: 6,345.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.78 : 16,213.14 = 4,230.35 : x
  2. Step 2: Convert to fraction form
    10,808.78/16,213.14 = 4,230.35/x
  3. Step 3: Cross multiply
    10,808.78x = 16,213.14 × 4,230.35
  4. Step 4: Simplify right side
    10,808.78x = 68,587,256.80
  5. Step 5: Solve for x
    x = 68,587,256.80/10,808.78
  6. Step 6: Final answer
    x = 6,345.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.