Home / 25,857.62-35,687.40-15,791.90

Finding the Fourth Proportional to 25,857.62, 35,687.40 and 15,791.90

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Solution

The fourth proportional to 25,857.62, 35,687.40 and 15,791.90 is: 21,795.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,857.62 : 35,687.40 = 15,791.90 : x
  2. Step 2: Convert to fraction form
    25,857.62/35,687.40 = 15,791.90/x
  3. Step 3: Cross multiply
    25,857.62x = 35,687.40 × 15,791.90
  4. Step 4: Simplify right side
    25,857.62x = 563,571,852.06
  5. Step 5: Solve for x
    x = 563,571,852.06/25,857.62
  6. Step 6: Final answer
    x = 21,795.19

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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.