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Finding the Fourth Proportional to 27,751.67, 38,250.66 and 21,035.15

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Solution

The fourth proportional to 27,751.67, 38,250.66 and 21,035.15 is: 28,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,751.67 : 38,250.66 = 21,035.15 : x
  2. Step 2: Convert to fraction form
    27,751.67/38,250.66 = 21,035.15/x
  3. Step 3: Cross multiply
    27,751.67x = 38,250.66 × 21,035.15
  4. Step 4: Simplify right side
    27,751.67x = 804,608,370.70
  5. Step 5: Solve for x
    x = 804,608,370.70/27,751.67
  6. Step 6: Final answer
    x = 28,993.15

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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.