Home / 22,315.68-30,789.44-15,944.20

Finding the Fourth Proportional to 22,315.68, 30,789.44 and 15,944.20

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Solution

The fourth proportional to 22,315.68, 30,789.44 and 15,944.20 is: 21,998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,315.68 : 30,789.44 = 15,944.20 : x
  2. Step 2: Convert to fraction form
    22,315.68/30,789.44 = 15,944.20/x
  3. Step 3: Cross multiply
    22,315.68x = 30,789.44 × 15,944.20
  4. Step 4: Simplify right side
    22,315.68x = 490,912,989.25
  5. Step 5: Solve for x
    x = 490,912,989.25/22,315.68
  6. Step 6: Final answer
    x = 21,998.57

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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.