Home / 27,750.67-38,249.28-21,034.15

Finding the Fourth Proportional to 27,750.67, 38,249.28 and 21,034.15

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Solution

The fourth proportional to 27,750.67, 38,249.28 and 21,034.15 is: 28,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,750.67 : 38,249.28 = 21,034.15 : x
  2. Step 2: Convert to fraction form
    27,750.67/38,249.28 = 21,034.15/x
  3. Step 3: Cross multiply
    27,750.67x = 38,249.28 × 21,034.15
  4. Step 4: Simplify right side
    27,750.67x = 804,540,997.29
  5. Step 5: Solve for x
    x = 804,540,997.29/27,750.67
  6. Step 6: Final answer
    x = 28,991.77

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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.