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Finding the Fourth Proportional to 18,488.94, 27,722.30 and 7,230.86

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Solution

The fourth proportional to 18,488.94, 27,722.30 and 7,230.86 is: 10,841.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.94 : 27,722.30 = 7,230.86 : x
  2. Step 2: Convert to fraction form
    18,488.94/27,722.30 = 7,230.86/x
  3. Step 3: Cross multiply
    18,488.94x = 27,722.30 × 7,230.86
  4. Step 4: Simplify right side
    18,488.94x = 200,456,070.18
  5. Step 5: Solve for x
    x = 200,456,070.18/18,488.94
  6. Step 6: Final answer
    x = 10,841.94

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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.