Home / 12,348.20-18,522.30-5,422.70

Finding the Fourth Proportional to 12,348.20, 18,522.30 and 5,422.70

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Solution

The fourth proportional to 12,348.20, 18,522.30 and 5,422.70 is: 8,134.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.20 : 18,522.30 = 5,422.70 : x
  2. Step 2: Convert to fraction form
    12,348.20/18,522.30 = 5,422.70/x
  3. Step 3: Cross multiply
    12,348.20x = 18,522.30 × 5,422.70
  4. Step 4: Simplify right side
    12,348.20x = 100,440,876.21
  5. Step 5: Solve for x
    x = 100,440,876.21/12,348.20
  6. Step 6: Final answer
    x = 8,134.05

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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.