Home / 39,704.72-54,792.11-21,799.55

Finding the Fourth Proportional to 39,704.72, 54,792.11 and 21,799.55

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Solution

The fourth proportional to 39,704.72, 54,792.11 and 21,799.55 is: 30,083.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,704.72 : 54,792.11 = 21,799.55 : x
  2. Step 2: Convert to fraction form
    39,704.72/54,792.11 = 21,799.55/x
  3. Step 3: Cross multiply
    39,704.72x = 54,792.11 × 21,799.55
  4. Step 4: Simplify right side
    39,704.72x = 1,194,443,533.03
  5. Step 5: Solve for x
    x = 1,194,443,533.03/39,704.72
  6. Step 6: Final answer
    x = 30,083.17

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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.