Home / 22,521.78-33,772.64-11,989.55

Finding the Fourth Proportional to 22,521.78, 33,772.64 and 11,989.55

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Solution

The fourth proportional to 22,521.78, 33,772.64 and 11,989.55 is: 17,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,521.78 : 33,772.64 = 11,989.55 : x
  2. Step 2: Convert to fraction form
    22,521.78/33,772.64 = 11,989.55/x
  3. Step 3: Cross multiply
    22,521.78x = 33,772.64 × 11,989.55
  4. Step 4: Simplify right side
    22,521.78x = 404,918,527.10
  5. Step 5: Solve for x
    x = 404,918,527.10/22,521.78
  6. Step 6: Final answer
    x = 17,978.98

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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.