Home / 39,747.68-54,848.16-21,841.28

Finding the Fourth Proportional to 39,747.68, 54,848.16 and 21,841.28

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Solution

The fourth proportional to 39,747.68, 54,848.16 and 21,841.28 is: 30,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,747.68 : 54,848.16 = 21,841.28 : x
  2. Step 2: Convert to fraction form
    39,747.68/54,848.16 = 21,841.28/x
  3. Step 3: Cross multiply
    39,747.68x = 54,848.16 × 21,841.28
  4. Step 4: Simplify right side
    39,747.68x = 1,197,954,020.04
  5. Step 5: Solve for x
    x = 1,197,954,020.04/39,747.68
  6. Step 6: Final answer
    x = 30,138.97

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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.