Home / 21,912.78-32,896.42-15,291.39

Finding the Fourth Proportional to 21,912.78, 32,896.42 and 15,291.39

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Solution

The fourth proportional to 21,912.78, 32,896.42 and 15,291.39 is: 22,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.78 : 32,896.42 = 15,291.39 : x
  2. Step 2: Convert to fraction form
    21,912.78/32,896.42 = 15,291.39/x
  3. Step 3: Cross multiply
    21,912.78x = 32,896.42 × 15,291.39
  4. Step 4: Simplify right side
    21,912.78x = 503,032,072.96
  5. Step 5: Solve for x
    x = 503,032,072.96/21,912.78
  6. Step 6: Final answer
    x = 22,956.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.