Home / 39,800.71-54,924.57-21,895.75

Finding the Fourth Proportional to 39,800.71, 54,924.57 and 21,895.75

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Solution

The fourth proportional to 39,800.71, 54,924.57 and 21,895.75 is: 30,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,800.71 : 54,924.57 = 21,895.75 : x
  2. Step 2: Convert to fraction form
    39,800.71/54,924.57 = 21,895.75/x
  3. Step 3: Cross multiply
    39,800.71x = 54,924.57 × 21,895.75
  4. Step 4: Simplify right side
    39,800.71x = 1,202,614,378.95
  5. Step 5: Solve for x
    x = 1,202,614,378.95/39,800.71
  6. Step 6: Final answer
    x = 30,215.91

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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.