Home / 39,243.07-54,155.17-21,338.09

Finding the Fourth Proportional to 39,243.07, 54,155.17 and 21,338.09

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Solution

The fourth proportional to 39,243.07, 54,155.17 and 21,338.09 is: 29,446.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.07 : 54,155.17 = 21,338.09 : x
  2. Step 2: Convert to fraction form
    39,243.07/54,155.17 = 21,338.09/x
  3. Step 3: Cross multiply
    39,243.07x = 54,155.17 × 21,338.09
  4. Step 4: Simplify right side
    39,243.07x = 1,155,567,891.43
  5. Step 5: Solve for x
    x = 1,155,567,891.43/39,243.07
  6. Step 6: Final answer
    x = 29,446.42

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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.