Home / 31,282.20-43,170.06-17,135.05

Finding the Fourth Proportional to 31,282.20, 43,170.06 and 17,135.05

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Solution

The fourth proportional to 31,282.20, 43,170.06 and 17,135.05 is: 23,646.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,282.20 : 43,170.06 = 17,135.05 : x
  2. Step 2: Convert to fraction form
    31,282.20/43,170.06 = 17,135.05/x
  3. Step 3: Cross multiply
    31,282.20x = 43,170.06 × 17,135.05
  4. Step 4: Simplify right side
    31,282.20x = 739,721,136.60
  5. Step 5: Solve for x
    x = 739,721,136.60/31,282.20
  6. Step 6: Final answer
    x = 23,646.71

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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.