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Finding the Fourth Proportional to 27,959.80, 41,939.70 and 25,821.40

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Solution

The fourth proportional to 27,959.80, 41,939.70 and 25,821.40 is: 38,732.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.80 : 41,939.70 = 25,821.40 : x
  2. Step 2: Convert to fraction form
    27,959.80/41,939.70 = 25,821.40/x
  3. Step 3: Cross multiply
    27,959.80x = 41,939.70 × 25,821.40
  4. Step 4: Simplify right side
    27,959.80x = 1,082,941,769.58
  5. Step 5: Solve for x
    x = 1,082,941,769.58/27,959.80
  6. Step 6: Final answer
    x = 38,732.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.