Home / 18,611.75-25,685.43-11,542.88

Finding the Fourth Proportional to 18,611.75, 25,685.43 and 11,542.88

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Solution

The fourth proportional to 18,611.75, 25,685.43 and 11,542.88 is: 15,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.75 : 25,685.43 = 11,542.88 : x
  2. Step 2: Convert to fraction form
    18,611.75/25,685.43 = 11,542.88/x
  3. Step 3: Cross multiply
    18,611.75x = 25,685.43 × 11,542.88
  4. Step 4: Simplify right side
    18,611.75x = 296,483,836.24
  5. Step 5: Solve for x
    x = 296,483,836.24/18,611.75
  6. Step 6: Final answer
    x = 15,929.93

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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.