Home / 21,660.04-29,890.90-11,724.04

Finding the Fourth Proportional to 21,660.04, 29,890.90 and 11,724.04

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Solution

The fourth proportional to 21,660.04, 29,890.90 and 11,724.04 is: 16,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.04 : 29,890.90 = 11,724.04 : x
  2. Step 2: Convert to fraction form
    21,660.04/29,890.90 = 11,724.04/x
  3. Step 3: Cross multiply
    21,660.04x = 29,890.90 × 11,724.04
  4. Step 4: Simplify right side
    21,660.04x = 350,442,107.24
  5. Step 5: Solve for x
    x = 350,442,107.24/21,660.04
  6. Step 6: Final answer
    x = 16,179.20

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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.