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Finding the Fourth Proportional to 18,206.20, 27,251.70 and 17,630.20

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Solution

The fourth proportional to 18,206.20, 27,251.70 and 17,630.20 is: 26,389.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,206.20 : 27,251.70 = 17,630.20 : x
  2. Step 2: Convert to fraction form
    18,206.20/27,251.70 = 17,630.20/x
  3. Step 3: Cross multiply
    18,206.20x = 27,251.70 × 17,630.20
  4. Step 4: Simplify right side
    18,206.20x = 480,452,921.34
  5. Step 5: Solve for x
    x = 480,452,921.34/18,206.20
  6. Step 6: Final answer
    x = 26,389.52

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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.