Home / 21,119.11-29,144.36-11,559.01

Finding the Fourth Proportional to 21,119.11, 29,144.36 and 11,559.01

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Solution

The fourth proportional to 21,119.11, 29,144.36 and 11,559.01 is: 15,951.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.11 : 29,144.36 = 11,559.01 : x
  2. Step 2: Convert to fraction form
    21,119.11/29,144.36 = 11,559.01/x
  3. Step 3: Cross multiply
    21,119.11x = 29,144.36 × 11,559.01
  4. Step 4: Simplify right side
    21,119.11x = 336,879,948.68
  5. Step 5: Solve for x
    x = 336,879,948.68/21,119.11
  6. Step 6: Final answer
    x = 15,951.43

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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.