Home / 21,165.70-29,209.07-11,604.96

Finding the Fourth Proportional to 21,165.70, 29,209.07 and 11,604.96

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Solution

The fourth proportional to 21,165.70, 29,209.07 and 11,604.96 is: 16,015.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.70 : 29,209.07 = 11,604.96 : x
  2. Step 2: Convert to fraction form
    21,165.70/29,209.07 = 11,604.96/x
  3. Step 3: Cross multiply
    21,165.70x = 29,209.07 × 11,604.96
  4. Step 4: Simplify right side
    21,165.70x = 338,970,088.99
  5. Step 5: Solve for x
    x = 338,970,088.99/21,165.70
  6. Step 6: Final answer
    x = 16,015.07

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Half scale
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Double scale
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Similar ratio
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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.