Home / 39,841.18-54,983.10-21,940

Finding the Fourth Proportional to 39,841.18, 54,983.10 and 21,940

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Solution

The fourth proportional to 39,841.18, 54,983.10 and 21,940 is: 30,278.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,841.18 : 54,983.10 = 21,940 : x
  2. Step 2: Convert to fraction form
    39,841.18/54,983.10 = 21,940/x
  3. Step 3: Cross multiply
    39,841.18x = 54,983.10 × 21,940
  4. Step 4: Simplify right side
    39,841.18x = 1,206,329,214
  5. Step 5: Solve for x
    x = 1,206,329,214/39,841.18
  6. Step 6: Final answer
    x = 30,278.45

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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.