Home / 21,521.09-29,699.10-11,960.97

Finding the Fourth Proportional to 21,521.09, 29,699.10 and 11,960.97

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Solution

The fourth proportional to 21,521.09, 29,699.10 and 11,960.97 is: 16,506.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.09 : 29,699.10 = 11,960.97 : x
  2. Step 2: Convert to fraction form
    21,521.09/29,699.10 = 11,960.97/x
  3. Step 3: Cross multiply
    21,521.09x = 29,699.10 × 11,960.97
  4. Step 4: Simplify right side
    21,521.09x = 355,230,044.13
  5. Step 5: Solve for x
    x = 355,230,044.13/21,521.09
  6. Step 6: Final answer
    x = 16,506.14

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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.