Home / 27,751.30-38,250.15-21,034.78

Finding the Fourth Proportional to 27,751.30, 38,250.15 and 21,034.78

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Solution

The fourth proportional to 27,751.30, 38,250.15 and 21,034.78 is: 28,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,751.30 : 38,250.15 = 21,034.78 : x
  2. Step 2: Convert to fraction form
    27,751.30/38,250.15 = 21,034.78/x
  3. Step 3: Cross multiply
    27,751.30x = 38,250.15 × 21,034.78
  4. Step 4: Simplify right side
    27,751.30x = 804,583,490.22
  5. Step 5: Solve for x
    x = 804,583,490.22/27,751.30
  6. Step 6: Final answer
    x = 28,992.64

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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.