Home / 21,081.87-29,093.52-11,522.16

Finding the Fourth Proportional to 21,081.87, 29,093.52 and 11,522.16

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Solution

The fourth proportional to 21,081.87, 29,093.52 and 11,522.16 is: 15,900.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.87 : 29,093.52 = 11,522.16 : x
  2. Step 2: Convert to fraction form
    21,081.87/29,093.52 = 11,522.16/x
  3. Step 3: Cross multiply
    21,081.87x = 29,093.52 × 11,522.16
  4. Step 4: Simplify right side
    21,081.87x = 335,220,192.40
  5. Step 5: Solve for x
    x = 335,220,192.40/21,081.87
  6. Step 6: Final answer
    x = 15,900.88

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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.