Home / 27,122.78-37,397.55-21,740.90

Finding the Fourth Proportional to 27,122.78, 37,397.55 and 21,740.90

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Solution

The fourth proportional to 27,122.78, 37,397.55 and 21,740.90 is: 29,976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,122.78 : 37,397.55 = 21,740.90 : x
  2. Step 2: Convert to fraction form
    27,122.78/37,397.55 = 21,740.90/x
  3. Step 3: Cross multiply
    27,122.78x = 37,397.55 × 21,740.90
  4. Step 4: Simplify right side
    27,122.78x = 813,056,394.80
  5. Step 5: Solve for x
    x = 813,056,394.80/27,122.78
  6. Step 6: Final answer
    x = 29,976.88

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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.