Home / 21,902.96-30,195.54-15,177.02

Finding the Fourth Proportional to 21,902.96, 30,195.54 and 15,177.02

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Solution

The fourth proportional to 21,902.96, 30,195.54 and 15,177.02 is: 20,923.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.96 : 30,195.54 = 15,177.02 : x
  2. Step 2: Convert to fraction form
    21,902.96/30,195.54 = 15,177.02/x
  3. Step 3: Cross multiply
    21,902.96x = 30,195.54 × 15,177.02
  4. Step 4: Simplify right side
    21,902.96x = 458,278,314.49
  5. Step 5: Solve for x
    x = 458,278,314.49/21,902.96
  6. Step 6: Final answer
    x = 20,923.12

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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.