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Finding the Fourth Proportional to 18,288.45, 27,432.54 and 5,809.45

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Solution

The fourth proportional to 18,288.45, 27,432.54 and 5,809.45 is: 8,714.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.45 : 27,432.54 = 5,809.45 : x
  2. Step 2: Convert to fraction form
    18,288.45/27,432.54 = 5,809.45/x
  3. Step 3: Cross multiply
    18,288.45x = 27,432.54 × 5,809.45
  4. Step 4: Simplify right side
    18,288.45x = 159,367,850.70
  5. Step 5: Solve for x
    x = 159,367,850.70/18,288.45
  6. Step 6: Final answer
    x = 8,714.13

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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.