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Finding the Fourth Proportional to 18,329.20, 27,475.08 and 7,220.61

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Solution

The fourth proportional to 18,329.20, 27,475.08 and 7,220.61 is: 10,823.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.20 : 27,475.08 = 7,220.61 : x
  2. Step 2: Convert to fraction form
    18,329.20/27,475.08 = 7,220.61/x
  3. Step 3: Cross multiply
    18,329.20x = 27,475.08 × 7,220.61
  4. Step 4: Simplify right side
    18,329.20x = 198,386,837.40
  5. Step 5: Solve for x
    x = 198,386,837.40/18,329.20
  6. Step 6: Final answer
    x = 10,823.54

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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.