Home / 10,821.12-16,225.96-5,116.08

Finding the Fourth Proportional to 10,821.12, 16,225.96 and 5,116.08

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Solution

The fourth proportional to 10,821.12, 16,225.96 and 5,116.08 is: 7,671.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.12 : 16,225.96 = 5,116.08 : x
  2. Step 2: Convert to fraction form
    10,821.12/16,225.96 = 5,116.08/x
  3. Step 3: Cross multiply
    10,821.12x = 16,225.96 × 5,116.08
  4. Step 4: Simplify right side
    10,821.12x = 83,013,309.44
  5. Step 5: Solve for x
    x = 83,013,309.44/10,821.12
  6. Step 6: Final answer
    x = 7,671.42

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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.