Home / 39,639.28-54,700.84-21,733.84

Finding the Fourth Proportional to 39,639.28, 54,700.84 and 21,733.84

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Solution

The fourth proportional to 39,639.28, 54,700.84 and 21,733.84 is: 29,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.28 : 54,700.84 = 21,733.84 : x
  2. Step 2: Convert to fraction form
    39,639.28/54,700.84 = 21,733.84/x
  3. Step 3: Cross multiply
    39,639.28x = 54,700.84 × 21,733.84
  4. Step 4: Simplify right side
    39,639.28x = 1,188,859,304.43
  5. Step 5: Solve for x
    x = 1,188,859,304.43/39,639.28
  6. Step 6: Final answer
    x = 29,991.95

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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.