Home / 21,341.72-29,451.59-11,910.29

Finding the Fourth Proportional to 21,341.72, 29,451.59 and 11,910.29

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Solution

The fourth proportional to 21,341.72, 29,451.59 and 11,910.29 is: 16,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.72 : 29,451.59 = 11,910.29 : x
  2. Step 2: Convert to fraction form
    21,341.72/29,451.59 = 11,910.29/x
  3. Step 3: Cross multiply
    21,341.72x = 29,451.59 × 11,910.29
  4. Step 4: Simplify right side
    21,341.72x = 350,776,860.38
  5. Step 5: Solve for x
    x = 350,776,860.38/21,341.72
  6. Step 6: Final answer
    x = 16,436.20

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Double scale
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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.