Home / 20,439.52-30,658.54-5,649.28

Finding the Fourth Proportional to 20,439.52, 30,658.54 and 5,649.28

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Solution

The fourth proportional to 20,439.52, 30,658.54 and 5,649.28 is: 8,473.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.52 : 30,658.54 = 5,649.28 : x
  2. Step 2: Convert to fraction form
    20,439.52/30,658.54 = 5,649.28/x
  3. Step 3: Cross multiply
    20,439.52x = 30,658.54 × 5,649.28
  4. Step 4: Simplify right side
    20,439.52x = 173,198,676.85
  5. Step 5: Solve for x
    x = 173,198,676.85/20,439.52
  6. Step 6: Final answer
    x = 8,473.72

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1.5x scale

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.