Home / 39,171.05-54,055.20-21,265.90

Finding the Fourth Proportional to 39,171.05, 54,055.20 and 21,265.90

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Solution

The fourth proportional to 39,171.05, 54,055.20 and 21,265.90 is: 29,346.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,171.05 : 54,055.20 = 21,265.90 : x
  2. Step 2: Convert to fraction form
    39,171.05/54,055.20 = 21,265.90/x
  3. Step 3: Cross multiply
    39,171.05x = 54,055.20 × 21,265.90
  4. Step 4: Simplify right side
    39,171.05x = 1,149,532,342.54
  5. Step 5: Solve for x
    x = 1,149,532,342.54/39,171.05
  6. Step 6: Final answer
    x = 29,346.48

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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.