Home / 25,859.88-35,685.60-15,805.12

Finding the Fourth Proportional to 25,859.88, 35,685.60 and 15,805.12

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Solution

The fourth proportional to 25,859.88, 35,685.60 and 15,805.12 is: 21,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,859.88 : 35,685.60 = 15,805.12 : x
  2. Step 2: Convert to fraction form
    25,859.88/35,685.60 = 15,805.12/x
  3. Step 3: Cross multiply
    25,859.88x = 35,685.60 × 15,805.12
  4. Step 4: Simplify right side
    25,859.88x = 564,015,190.27
  5. Step 5: Solve for x
    x = 564,015,190.27/25,859.88
  6. Step 6: Final answer
    x = 21,810.43

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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.