Home / 21,223.32-29,288.79-12,150.30

Finding the Fourth Proportional to 21,223.32, 29,288.79 and 12,150.30

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Solution

The fourth proportional to 21,223.32, 29,288.79 and 12,150.30 is: 16,767.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.32 : 29,288.79 = 12,150.30 : x
  2. Step 2: Convert to fraction form
    21,223.32/29,288.79 = 12,150.30/x
  3. Step 3: Cross multiply
    21,223.32x = 29,288.79 × 12,150.30
  4. Step 4: Simplify right side
    21,223.32x = 355,867,694.97
  5. Step 5: Solve for x
    x = 355,867,694.97/21,223.32
  6. Step 6: Final answer
    x = 16,767.77

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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.