Home / 39,639.28-54,701.78-21,734.24

Finding the Fourth Proportional to 39,639.28, 54,701.78 and 21,734.24

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Solution

The fourth proportional to 39,639.28, 54,701.78 and 21,734.24 is: 29,993.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.28 : 54,701.78 = 21,734.24 : x
  2. Step 2: Convert to fraction form
    39,639.28/54,701.78 = 21,734.24/x
  3. Step 3: Cross multiply
    39,639.28x = 54,701.78 × 21,734.24
  4. Step 4: Simplify right side
    39,639.28x = 1,188,901,806.04
  5. Step 5: Solve for x
    x = 1,188,901,806.04/39,639.28
  6. Step 6: Final answer
    x = 29,993.02

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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.