Home / 39,981.78-55,174.60-22,076.62

Finding the Fourth Proportional to 39,981.78, 55,174.60 and 22,076.62

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Solution

The fourth proportional to 39,981.78, 55,174.60 and 22,076.62 is: 30,465.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,981.78 : 55,174.60 = 22,076.62 : x
  2. Step 2: Convert to fraction form
    39,981.78/55,174.60 = 22,076.62/x
  3. Step 3: Cross multiply
    39,981.78x = 55,174.60 × 22,076.62
  4. Step 4: Simplify right side
    39,981.78x = 1,218,068,677.85
  5. Step 5: Solve for x
    x = 1,218,068,677.85/39,981.78
  6. Step 6: Final answer
    x = 30,465.59

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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.