Home / 22,619.87-31,149.62-21,175.80

Finding the Fourth Proportional to 22,619.87, 31,149.62 and 21,175.80

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Solution

The fourth proportional to 22,619.87, 31,149.62 and 21,175.80 is: 29,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,619.87 : 31,149.62 = 21,175.80 : x
  2. Step 2: Convert to fraction form
    22,619.87/31,149.62 = 21,175.80/x
  3. Step 3: Cross multiply
    22,619.87x = 31,149.62 × 21,175.80
  4. Step 4: Simplify right side
    22,619.87x = 659,618,123.20
  5. Step 5: Solve for x
    x = 659,618,123.20/22,619.87
  6. Step 6: Final answer
    x = 29,161.00

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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.