Home / 10,612.20-15,918.30-3,216.29

Finding the Fourth Proportional to 10,612.20, 15,918.30 and 3,216.29

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Solution

The fourth proportional to 10,612.20, 15,918.30 and 3,216.29 is: 4,824.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,612.20 : 15,918.30 = 3,216.29 : x
  2. Step 2: Convert to fraction form
    10,612.20/15,918.30 = 3,216.29/x
  3. Step 3: Cross multiply
    10,612.20x = 15,918.30 × 3,216.29
  4. Step 4: Simplify right side
    10,612.20x = 51,197,869.11
  5. Step 5: Solve for x
    x = 51,197,869.11/10,612.20
  6. Step 6: Final answer
    x = 4,824.44

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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.