Home / 21,769.14-30,044.38-12,338.31

Finding the Fourth Proportional to 21,769.14, 30,044.38 and 12,338.31

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Solution

The fourth proportional to 21,769.14, 30,044.38 and 12,338.31 is: 17,028.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.14 : 30,044.38 = 12,338.31 : x
  2. Step 2: Convert to fraction form
    21,769.14/30,044.38 = 12,338.31/x
  3. Step 3: Cross multiply
    21,769.14x = 30,044.38 × 12,338.31
  4. Step 4: Simplify right side
    21,769.14x = 370,696,874.20
  5. Step 5: Solve for x
    x = 370,696,874.20/21,769.14
  6. Step 6: Final answer
    x = 17,028.55

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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.