Home / 21,190.36-29,248.41-13,227.79

Finding the Fourth Proportional to 21,190.36, 29,248.41 and 13,227.79

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Solution

The fourth proportional to 21,190.36, 29,248.41 and 13,227.79 is: 18,257.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.36 : 29,248.41 = 13,227.79 : x
  2. Step 2: Convert to fraction form
    21,190.36/29,248.41 = 13,227.79/x
  3. Step 3: Cross multiply
    21,190.36x = 29,248.41 × 13,227.79
  4. Step 4: Simplify right side
    21,190.36x = 386,891,825.31
  5. Step 5: Solve for x
    x = 386,891,825.31/21,190.36
  6. Step 6: Final answer
    x = 18,257.92

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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.