Home / 20,247.54-30,371.50-7,099.90

Finding the Fourth Proportional to 20,247.54, 30,371.50 and 7,099.90

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Solution

The fourth proportional to 20,247.54, 30,371.50 and 7,099.90 is: 10,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.54 : 30,371.50 = 7,099.90 : x
  2. Step 2: Convert to fraction form
    20,247.54/30,371.50 = 7,099.90/x
  3. Step 3: Cross multiply
    20,247.54x = 30,371.50 × 7,099.90
  4. Step 4: Simplify right side
    20,247.54x = 215,634,612.85
  5. Step 5: Solve for x
    x = 215,634,612.85/20,247.54
  6. Step 6: Final answer
    x = 10,649.92

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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.