Home / 21,145.24-29,180.08-12,192.04

Finding the Fourth Proportional to 21,145.24, 29,180.08 and 12,192.04

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Solution

The fourth proportional to 21,145.24, 29,180.08 and 12,192.04 is: 16,824.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.24 : 29,180.08 = 12,192.04 : x
  2. Step 2: Convert to fraction form
    21,145.24/29,180.08 = 12,192.04/x
  3. Step 3: Cross multiply
    21,145.24x = 29,180.08 × 12,192.04
  4. Step 4: Simplify right side
    21,145.24x = 355,764,702.56
  5. Step 5: Solve for x
    x = 355,764,702.56/21,145.24
  6. Step 6: Final answer
    x = 16,824.81

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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.