Home / 21,119.73-29,145.23-11,559.62

Finding the Fourth Proportional to 21,119.73, 29,145.23 and 11,559.62

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Solution

The fourth proportional to 21,119.73, 29,145.23 and 11,559.62 is: 15,952.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.73 : 29,145.23 = 11,559.62 : x
  2. Step 2: Convert to fraction form
    21,119.73/29,145.23 = 11,559.62/x
  3. Step 3: Cross multiply
    21,119.73x = 29,145.23 × 11,559.62
  4. Step 4: Simplify right side
    21,119.73x = 336,907,580.09
  5. Step 5: Solve for x
    x = 336,907,580.09/21,119.73
  6. Step 6: Final answer
    x = 15,952.27

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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.