Home / 10,719.60-16,079.40-2,929.20

Finding the Fourth Proportional to 10,719.60, 16,079.40 and 2,929.20

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Solution

The fourth proportional to 10,719.60, 16,079.40 and 2,929.20 is: 4,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,719.60 : 16,079.40 = 2,929.20 : x
  2. Step 2: Convert to fraction form
    10,719.60/16,079.40 = 2,929.20/x
  3. Step 3: Cross multiply
    10,719.60x = 16,079.40 × 2,929.20
  4. Step 4: Simplify right side
    10,719.60x = 47,099,778.48
  5. Step 5: Solve for x
    x = 47,099,778.48/10,719.60
  6. Step 6: Final answer
    x = 4,393.80

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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.