Home / 39,744.12-54,848.31-21,839.76

Finding the Fourth Proportional to 39,744.12, 54,848.31 and 21,839.76

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Solution

The fourth proportional to 39,744.12, 54,848.31 and 21,839.76 is: 30,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,744.12 : 54,848.31 = 21,839.76 : x
  2. Step 2: Convert to fraction form
    39,744.12/54,848.31 = 21,839.76/x
  3. Step 3: Cross multiply
    39,744.12x = 54,848.31 × 21,839.76
  4. Step 4: Simplify right side
    39,744.12x = 1,197,873,926.81
  5. Step 5: Solve for x
    x = 1,197,873,926.81/39,744.12
  6. Step 6: Final answer
    x = 30,139.65

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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.