Home / 21,415.29-29,553.12-11,724.60

Finding the Fourth Proportional to 21,415.29, 29,553.12 and 11,724.60

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Solution

The fourth proportional to 21,415.29, 29,553.12 and 11,724.60 is: 16,179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.29 : 29,553.12 = 11,724.60 : x
  2. Step 2: Convert to fraction form
    21,415.29/29,553.12 = 11,724.60/x
  3. Step 3: Cross multiply
    21,415.29x = 29,553.12 × 11,724.60
  4. Step 4: Simplify right side
    21,415.29x = 346,498,510.75
  5. Step 5: Solve for x
    x = 346,498,510.75/21,415.29
  6. Step 6: Final answer
    x = 16,179.96

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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.