Home / 28,218.45-38,933.57-22,231.53

Finding the Fourth Proportional to 28,218.45, 38,933.57 and 22,231.53

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Solution

The fourth proportional to 28,218.45, 38,933.57 and 22,231.53 is: 30,673.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.45 : 38,933.57 = 22,231.53 : x
  2. Step 2: Convert to fraction form
    28,218.45/38,933.57 = 22,231.53/x
  3. Step 3: Cross multiply
    28,218.45x = 38,933.57 × 22,231.53
  4. Step 4: Simplify right side
    28,218.45x = 865,552,718.30
  5. Step 5: Solve for x
    x = 865,552,718.30/28,218.45
  6. Step 6: Final answer
    x = 30,673.29

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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.