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Finding the Fourth Proportional to 25,755.87, 35,560.17 and 19,776.81

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Solution

The fourth proportional to 25,755.87, 35,560.17 and 19,776.81 is: 27,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,755.87 : 35,560.17 = 19,776.81 : x
  2. Step 2: Convert to fraction form
    25,755.87/35,560.17 = 19,776.81/x
  3. Step 3: Cross multiply
    25,755.87x = 35,560.17 × 19,776.81
  4. Step 4: Simplify right side
    25,755.87x = 703,266,725.66
  5. Step 5: Solve for x
    x = 703,266,725.66/25,755.87
  6. Step 6: Final answer
    x = 27,305.10

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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.