Home / 39,399.36-54,391.14-30,426.72

Finding the Fourth Proportional to 39,399.36, 54,391.14 and 30,426.72

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Solution

The fourth proportional to 39,399.36, 54,391.14 and 30,426.72 is: 42,004.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,399.36 : 54,391.14 = 30,426.72 : x
  2. Step 2: Convert to fraction form
    39,399.36/54,391.14 = 30,426.72/x
  3. Step 3: Cross multiply
    39,399.36x = 54,391.14 × 30,426.72
  4. Step 4: Simplify right side
    39,399.36x = 1,654,943,987.26
  5. Step 5: Solve for x
    x = 1,654,943,987.26/39,399.36
  6. Step 6: Final answer
    x = 42,004.34

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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.