Home / 25,685.32-35,436-16,121.20

Finding the Fourth Proportional to 25,685.32, 35,436 and 16,121.20

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Solution

The fourth proportional to 25,685.32, 35,436 and 16,121.20 is: 22,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,685.32 : 35,436 = 16,121.20 : x
  2. Step 2: Convert to fraction form
    25,685.32/35,436 = 16,121.20/x
  3. Step 3: Cross multiply
    25,685.32x = 35,436 × 16,121.20
  4. Step 4: Simplify right side
    25,685.32x = 571,270,843.20
  5. Step 5: Solve for x
    x = 571,270,843.20/25,685.32
  6. Step 6: Final answer
    x = 22,241.14

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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.