Home / 20,377.21-30,558.13-8,531.80

Finding the Fourth Proportional to 20,377.21, 30,558.13 and 8,531.80

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Solution

The fourth proportional to 20,377.21, 30,558.13 and 8,531.80 is: 12,794.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.21 : 30,558.13 = 8,531.80 : x
  2. Step 2: Convert to fraction form
    20,377.21/30,558.13 = 8,531.80/x
  3. Step 3: Cross multiply
    20,377.21x = 30,558.13 × 8,531.80
  4. Step 4: Simplify right side
    20,377.21x = 260,715,853.53
  5. Step 5: Solve for x
    x = 260,715,853.53/20,377.21
  6. Step 6: Final answer
    x = 12,794.48

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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.