Home / 27,680-38,171.04-18,122.72

Finding the Fourth Proportional to 27,680, 38,171.04 and 18,122.72

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Solution

The fourth proportional to 27,680, 38,171.04 and 18,122.72 is: 24,991.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,680 : 38,171.04 = 18,122.72 : x
  2. Step 2: Convert to fraction form
    27,680/38,171.04 = 18,122.72/x
  3. Step 3: Cross multiply
    27,680x = 38,171.04 × 18,122.72
  4. Step 4: Simplify right side
    27,680x = 691,763,070.03
  5. Step 5: Solve for x
    x = 691,763,070.03/27,680
  6. Step 6: Final answer
    x = 24,991.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.