Home / 39,178.78-54,066.62-21,273.60

Finding the Fourth Proportional to 39,178.78, 54,066.62 and 21,273.60

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Solution

The fourth proportional to 39,178.78, 54,066.62 and 21,273.60 is: 29,357.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,178.78 : 54,066.62 = 21,273.60 : x
  2. Step 2: Convert to fraction form
    39,178.78/54,066.62 = 21,273.60/x
  3. Step 3: Cross multiply
    39,178.78x = 54,066.62 × 21,273.60
  4. Step 4: Simplify right side
    39,178.78x = 1,150,191,647.23
  5. Step 5: Solve for x
    x = 1,150,191,647.23/39,178.78
  6. Step 6: Final answer
    x = 29,357.52

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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.