Home / 10,722.20-16,080.78-2,929.16

Finding the Fourth Proportional to 10,722.20, 16,080.78 and 2,929.16

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Solution

The fourth proportional to 10,722.20, 16,080.78 and 2,929.16 is: 4,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,722.20 : 16,080.78 = 2,929.16 : x
  2. Step 2: Convert to fraction form
    10,722.20/16,080.78 = 2,929.16/x
  3. Step 3: Cross multiply
    10,722.20x = 16,080.78 × 2,929.16
  4. Step 4: Simplify right side
    10,722.20x = 47,103,177.54
  5. Step 5: Solve for x
    x = 47,103,177.54/10,722.20
  6. Step 6: Final answer
    x = 4,393.05

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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.