Home / 39,243.22-54,155.78-21,338.17

Finding the Fourth Proportional to 39,243.22, 54,155.78 and 21,338.17

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Solution

The fourth proportional to 39,243.22, 54,155.78 and 21,338.17 is: 29,446.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.22 : 54,155.78 = 21,338.17 : x
  2. Step 2: Convert to fraction form
    39,243.22/54,155.78 = 21,338.17/x
  3. Step 3: Cross multiply
    39,243.22x = 54,155.78 × 21,338.17
  4. Step 4: Simplify right side
    39,243.22x = 1,155,585,240.12
  5. Step 5: Solve for x
    x = 1,155,585,240.12/39,243.22
  6. Step 6: Final answer
    x = 29,446.75

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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.