Home / 22,195.89-30,642.71-15,399.99

Finding the Fourth Proportional to 22,195.89, 30,642.71 and 15,399.99

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Solution

The fourth proportional to 22,195.89, 30,642.71 and 15,399.99 is: 21,260.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.89 : 30,642.71 = 15,399.99 : x
  2. Step 2: Convert to fraction form
    22,195.89/30,642.71 = 15,399.99/x
  3. Step 3: Cross multiply
    22,195.89x = 30,642.71 × 15,399.99
  4. Step 4: Simplify right side
    22,195.89x = 471,897,350.57
  5. Step 5: Solve for x
    x = 471,897,350.57/22,195.89
  6. Step 6: Final answer
    x = 21,260.57

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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.