Home / 22,515.21-33,772.78-21,145.09

Finding the Fourth Proportional to 22,515.21, 33,772.78 and 21,145.09

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Solution

The fourth proportional to 22,515.21, 33,772.78 and 21,145.09 is: 31,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.21 : 33,772.78 = 21,145.09 : x
  2. Step 2: Convert to fraction form
    22,515.21/33,772.78 = 21,145.09/x
  3. Step 3: Cross multiply
    22,515.21x = 33,772.78 × 21,145.09
  4. Step 4: Simplify right side
    22,515.21x = 714,128,505.50
  5. Step 5: Solve for x
    x = 714,128,505.50/22,515.21
  6. Step 6: Final answer
    x = 31,717.60

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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.