Home / 31,245.20-43,117.32-17,820.80

Finding the Fourth Proportional to 31,245.20, 43,117.32 and 17,820.80

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Solution

The fourth proportional to 31,245.20, 43,117.32 and 17,820.80 is: 24,592.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,245.20 : 43,117.32 = 17,820.80 : x
  2. Step 2: Convert to fraction form
    31,245.20/43,117.32 = 17,820.80/x
  3. Step 3: Cross multiply
    31,245.20x = 43,117.32 × 17,820.80
  4. Step 4: Simplify right side
    31,245.20x = 768,385,136.26
  5. Step 5: Solve for x
    x = 768,385,136.26/31,245.20
  6. Step 6: Final answer
    x = 24,592.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.