Home / 39,824.32-54,957.76-21,921.12

Finding the Fourth Proportional to 39,824.32, 54,957.76 and 21,921.12

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Solution

The fourth proportional to 39,824.32, 54,957.76 and 21,921.12 is: 30,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,824.32 : 54,957.76 = 21,921.12 : x
  2. Step 2: Convert to fraction form
    39,824.32/54,957.76 = 21,921.12/x
  3. Step 3: Cross multiply
    39,824.32x = 54,957.76 × 21,921.12
  4. Step 4: Simplify right side
    39,824.32x = 1,204,735,651.89
  5. Step 5: Solve for x
    x = 1,204,735,651.89/39,824.32
  6. Step 6: Final answer
    x = 30,251.25

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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.