Home / 39,964.30-55,152.07-21,816.10

Finding the Fourth Proportional to 39,964.30, 55,152.07 and 21,816.10

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Solution

The fourth proportional to 39,964.30, 55,152.07 and 21,816.10 is: 30,106.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,964.30 : 55,152.07 = 21,816.10 : x
  2. Step 2: Convert to fraction form
    39,964.30/55,152.07 = 21,816.10/x
  3. Step 3: Cross multiply
    39,964.30x = 55,152.07 × 21,816.10
  4. Step 4: Simplify right side
    39,964.30x = 1,203,203,074.33
  5. Step 5: Solve for x
    x = 1,203,203,074.33/39,964.30
  6. Step 6: Final answer
    x = 30,106.95

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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.