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Finding the Fourth Proportional to 25,375.78, 35,019.51 and 13,891.49

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Solution

The fourth proportional to 25,375.78, 35,019.51 and 13,891.49 is: 19,170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,375.78 : 35,019.51 = 13,891.49 : x
  2. Step 2: Convert to fraction form
    25,375.78/35,019.51 = 13,891.49/x
  3. Step 3: Cross multiply
    25,375.78x = 35,019.51 × 13,891.49
  4. Step 4: Simplify right side
    25,375.78x = 486,473,274.09
  5. Step 5: Solve for x
    x = 486,473,274.09/25,375.78
  6. Step 6: Final answer
    x = 19,170.77

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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.