Home / 21,324.49-29,428.19-11,892.04

Finding the Fourth Proportional to 21,324.49, 29,428.19 and 11,892.04

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Solution

The fourth proportional to 21,324.49, 29,428.19 and 11,892.04 is: 16,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.49 : 29,428.19 = 11,892.04 : x
  2. Step 2: Convert to fraction form
    21,324.49/29,428.19 = 11,892.04/x
  3. Step 3: Cross multiply
    21,324.49x = 29,428.19 × 11,892.04
  4. Step 4: Simplify right side
    21,324.49x = 349,961,212.61
  5. Step 5: Solve for x
    x = 349,961,212.61/21,324.49
  6. Step 6: Final answer
    x = 16,411.23

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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.