Home / 21,929.33-30,267.47-12,982.07

Finding the Fourth Proportional to 21,929.33, 30,267.47 and 12,982.07

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Solution

The fourth proportional to 21,929.33, 30,267.47 and 12,982.07 is: 17,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.33 : 30,267.47 = 12,982.07 : x
  2. Step 2: Convert to fraction form
    21,929.33/30,267.47 = 12,982.07/x
  3. Step 3: Cross multiply
    21,929.33x = 30,267.47 × 12,982.07
  4. Step 4: Simplify right side
    21,929.33x = 392,934,414.26
  5. Step 5: Solve for x
    x = 392,934,414.26/21,929.33
  6. Step 6: Final answer
    x = 17,918.21

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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.