Home / 21,081.37-29,092.83-11,521.66

Finding the Fourth Proportional to 21,081.37, 29,092.83 and 11,521.66

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Solution

The fourth proportional to 21,081.37, 29,092.83 and 11,521.66 is: 15,900.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.37 : 29,092.83 = 11,521.66 : x
  2. Step 2: Convert to fraction form
    21,081.37/29,092.83 = 11,521.66/x
  3. Step 3: Cross multiply
    21,081.37x = 29,092.83 × 11,521.66
  4. Step 4: Simplify right side
    21,081.37x = 335,197,695.70
  5. Step 5: Solve for x
    x = 335,197,695.70/21,081.37
  6. Step 6: Final answer
    x = 15,900.19

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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.