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Finding the Fourth Proportional to 27,755.88, 38,303.11 and 15,180.63

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Solution

The fourth proportional to 27,755.88, 38,303.11 and 15,180.63 is: 20,949.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,755.88 : 38,303.11 = 15,180.63 : x
  2. Step 2: Convert to fraction form
    27,755.88/38,303.11 = 15,180.63/x
  3. Step 3: Cross multiply
    27,755.88x = 38,303.11 × 15,180.63
  4. Step 4: Simplify right side
    27,755.88x = 581,465,340.76
  5. Step 5: Solve for x
    x = 581,465,340.76/27,755.88
  6. Step 6: Final answer
    x = 20,949.27

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Half scale
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Double scale
Find fourth proportional to 27,756.88, 38,304.49 and 15,181.63
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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.