Home / 34,319.20-51,517.20-18,728.80

Finding the Fourth Proportional to 34,319.20, 51,517.20 and 18,728.80

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Solution

The fourth proportional to 34,319.20, 51,517.20 and 18,728.80 is: 28,114.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,319.20 : 51,517.20 = 18,728.80 : x
  2. Step 2: Convert to fraction form
    34,319.20/51,517.20 = 18,728.80/x
  3. Step 3: Cross multiply
    34,319.20x = 51,517.20 × 18,728.80
  4. Step 4: Simplify right side
    34,319.20x = 964,855,335.36
  5. Step 5: Solve for x
    x = 964,855,335.36/34,319.20
  6. Step 6: Final answer
    x = 28,114.16

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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.