Home / 39,888.92-55,046.42-21,984.68

Finding the Fourth Proportional to 39,888.92, 55,046.42 and 21,984.68

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Solution

The fourth proportional to 39,888.92, 55,046.42 and 21,984.68 is: 30,338.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.92 : 55,046.42 = 21,984.68 : x
  2. Step 2: Convert to fraction form
    39,888.92/55,046.42 = 21,984.68/x
  3. Step 3: Cross multiply
    39,888.92x = 55,046.42 × 21,984.68
  4. Step 4: Simplify right side
    39,888.92x = 1,210,177,928.85
  5. Step 5: Solve for x
    x = 1,210,177,928.85/39,888.92
  6. Step 6: Final answer
    x = 30,338.70

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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.