Home / 9,020.20-13,512.30-7,937.80

Finding the Fourth Proportional to 9,020.20, 13,512.30 and 7,937.80

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Solution

The fourth proportional to 9,020.20, 13,512.30 and 7,937.80 is: 11,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,020.20 : 13,512.30 = 7,937.80 : x
  2. Step 2: Convert to fraction form
    9,020.20/13,512.30 = 7,937.80/x
  3. Step 3: Cross multiply
    9,020.20x = 13,512.30 × 7,937.80
  4. Step 4: Simplify right side
    9,020.20x = 107,257,934.94
  5. Step 5: Solve for x
    x = 107,257,934.94/9,020.20
  6. Step 6: Final answer
    x = 11,890.86

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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.