Home / 10,781.60-16,165.40-4,208.46

Finding the Fourth Proportional to 10,781.60, 16,165.40 and 4,208.46

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Solution

The fourth proportional to 10,781.60, 16,165.40 and 4,208.46 is: 6,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.60 : 16,165.40 = 4,208.46 : x
  2. Step 2: Convert to fraction form
    10,781.60/16,165.40 = 4,208.46/x
  3. Step 3: Cross multiply
    10,781.60x = 16,165.40 × 4,208.46
  4. Step 4: Simplify right side
    10,781.60x = 68,031,439.28
  5. Step 5: Solve for x
    x = 68,031,439.28/10,781.60
  6. Step 6: Final answer
    x = 6,309.96

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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.