Home / 39,243.56-54,156.21-21,338.56

Finding the Fourth Proportional to 39,243.56, 54,156.21 and 21,338.56

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Solution

The fourth proportional to 39,243.56, 54,156.21 and 21,338.56 is: 29,447.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.56 : 54,156.21 = 21,338.56 : x
  2. Step 2: Convert to fraction form
    39,243.56/54,156.21 = 21,338.56/x
  3. Step 3: Cross multiply
    39,243.56x = 54,156.21 × 21,338.56
  4. Step 4: Simplify right side
    39,243.56x = 1,155,615,265.68
  5. Step 5: Solve for x
    x = 1,155,615,265.68/39,243.56
  6. Step 6: Final answer
    x = 29,447.26

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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.