Home / 20,335.25-30,515.13-8,648.44

Finding the Fourth Proportional to 20,335.25, 30,515.13 and 8,648.44

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Solution

The fourth proportional to 20,335.25, 30,515.13 and 8,648.44 is: 12,977.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.25 : 30,515.13 = 8,648.44 : x
  2. Step 2: Convert to fraction form
    20,335.25/30,515.13 = 8,648.44/x
  3. Step 3: Cross multiply
    20,335.25x = 30,515.13 × 8,648.44
  4. Step 4: Simplify right side
    20,335.25x = 263,908,194.61
  5. Step 5: Solve for x
    x = 263,908,194.61/20,335.25
  6. Step 6: Final answer
    x = 12,977.87

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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.