Home / 20,648.85-30,933.46-12,335.52

Finding the Fourth Proportional to 20,648.85, 30,933.46 and 12,335.52

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Solution

The fourth proportional to 20,648.85, 30,933.46 and 12,335.52 is: 18,479.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.85 : 30,933.46 = 12,335.52 : x
  2. Step 2: Convert to fraction form
    20,648.85/30,933.46 = 12,335.52/x
  3. Step 3: Cross multiply
    20,648.85x = 30,933.46 × 12,335.52
  4. Step 4: Simplify right side
    20,648.85x = 381,580,314.50
  5. Step 5: Solve for x
    x = 381,580,314.50/20,648.85
  6. Step 6: Final answer
    x = 18,479.49

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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.