Home / 39,178.50-54,066.36-21,273.51

Finding the Fourth Proportional to 39,178.50, 54,066.36 and 21,273.51

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Solution

The fourth proportional to 39,178.50, 54,066.36 and 21,273.51 is: 29,357.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,178.50 : 54,066.36 = 21,273.51 : x
  2. Step 2: Convert to fraction form
    39,178.50/54,066.36 = 21,273.51/x
  3. Step 3: Cross multiply
    39,178.50x = 54,066.36 × 21,273.51
  4. Step 4: Simplify right side
    39,178.50x = 1,150,181,250.12
  5. Step 5: Solve for x
    x = 1,150,181,250.12/39,178.50
  6. Step 6: Final answer
    x = 29,357.46

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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.