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Finding the Fourth Proportional to 21,044.78, 29,040.81 and 12,085.97

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Solution

The fourth proportional to 21,044.78, 29,040.81 and 12,085.97 is: 16,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,044.78 : 29,040.81 = 12,085.97 : x
  2. Step 2: Convert to fraction form
    21,044.78/29,040.81 = 12,085.97/x
  3. Step 3: Cross multiply
    21,044.78x = 29,040.81 × 12,085.97
  4. Step 4: Simplify right side
    21,044.78x = 350,986,358.44
  5. Step 5: Solve for x
    x = 350,986,358.44/21,044.78
  6. Step 6: Final answer
    x = 16,678.07

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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.