Home / 18,418.20-27,644.70-9,659.40

Finding the Fourth Proportional to 18,418.20, 27,644.70 and 9,659.40

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Solution

The fourth proportional to 18,418.20, 27,644.70 and 9,659.40 is: 14,498.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.20 : 27,644.70 = 9,659.40 : x
  2. Step 2: Convert to fraction form
    18,418.20/27,644.70 = 9,659.40/x
  3. Step 3: Cross multiply
    18,418.20x = 27,644.70 × 9,659.40
  4. Step 4: Simplify right side
    18,418.20x = 267,031,215.18
  5. Step 5: Solve for x
    x = 267,031,215.18/18,418.20
  6. Step 6: Final answer
    x = 14,498.23

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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.