Home / 39,243.75-54,156.08-21,338.75

Finding the Fourth Proportional to 39,243.75, 54,156.08 and 21,338.75

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Solution

The fourth proportional to 39,243.75, 54,156.08 and 21,338.75 is: 29,447.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.75 : 54,156.08 = 21,338.75 : x
  2. Step 2: Convert to fraction form
    39,243.75/54,156.08 = 21,338.75/x
  3. Step 3: Cross multiply
    39,243.75x = 54,156.08 × 21,338.75
  4. Step 4: Simplify right side
    39,243.75x = 1,155,622,944.28
  5. Step 5: Solve for x
    x = 1,155,622,944.28/39,243.75
  6. Step 6: Final answer
    x = 29,447.31

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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.