Home / 21,191.66-29,244.75-11,761.10

Finding the Fourth Proportional to 21,191.66, 29,244.75 and 11,761.10

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Solution

The fourth proportional to 21,191.66, 29,244.75 and 11,761.10 is: 16,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.66 : 29,244.75 = 11,761.10 : x
  2. Step 2: Convert to fraction form
    21,191.66/29,244.75 = 11,761.10/x
  3. Step 3: Cross multiply
    21,191.66x = 29,244.75 × 11,761.10
  4. Step 4: Simplify right side
    21,191.66x = 343,950,429.23
  5. Step 5: Solve for x
    x = 343,950,429.23/21,191.66
  6. Step 6: Final answer
    x = 16,230.46

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Half scale
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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.