Home / 39,171.78-54,055.55-21,266.39

Finding the Fourth Proportional to 39,171.78, 54,055.55 and 21,266.39

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Solution

The fourth proportional to 39,171.78, 54,055.55 and 21,266.39 is: 29,346.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,171.78 : 54,055.55 = 21,266.39 : x
  2. Step 2: Convert to fraction form
    39,171.78/54,055.55 = 21,266.39/x
  3. Step 3: Cross multiply
    39,171.78x = 54,055.55 × 21,266.39
  4. Step 4: Simplify right side
    39,171.78x = 1,149,566,596.27
  5. Step 5: Solve for x
    x = 1,149,566,596.27/39,171.78
  6. Step 6: Final answer
    x = 29,346.81

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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.