Home / 20,611.70-28,422.78-17,637.38

Finding the Fourth Proportional to 20,611.70, 28,422.78 and 17,637.38

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Solution

The fourth proportional to 20,611.70, 28,422.78 and 17,637.38 is: 24,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.70 : 28,422.78 = 17,637.38 : x
  2. Step 2: Convert to fraction form
    20,611.70/28,422.78 = 17,637.38/x
  3. Step 3: Cross multiply
    20,611.70x = 28,422.78 × 17,637.38
  4. Step 4: Simplify right side
    20,611.70x = 501,303,371.52
  5. Step 5: Solve for x
    x = 501,303,371.52/20,611.70
  6. Step 6: Final answer
    x = 24,321.30

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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.