Home / 20,432.70-30,648.44-5,642.52

Finding the Fourth Proportional to 20,432.70, 30,648.44 and 5,642.52

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Solution

The fourth proportional to 20,432.70, 30,648.44 and 5,642.52 is: 8,463.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.70 : 30,648.44 = 5,642.52 : x
  2. Step 2: Convert to fraction form
    20,432.70/30,648.44 = 5,642.52/x
  3. Step 3: Cross multiply
    20,432.70x = 30,648.44 × 5,642.52
  4. Step 4: Simplify right side
    20,432.70x = 172,934,435.67
  5. Step 5: Solve for x
    x = 172,934,435.67/20,432.70
  6. Step 6: Final answer
    x = 8,463.61

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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.