Home / 21,104.20-29,122.84-11,543.92

Finding the Fourth Proportional to 21,104.20, 29,122.84 and 11,543.92

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Solution

The fourth proportional to 21,104.20, 29,122.84 and 11,543.92 is: 15,930.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.20 : 29,122.84 = 11,543.92 : x
  2. Step 2: Convert to fraction form
    21,104.20/29,122.84 = 11,543.92/x
  3. Step 3: Cross multiply
    21,104.20x = 29,122.84 × 11,543.92
  4. Step 4: Simplify right side
    21,104.20x = 336,191,735.13
  5. Step 5: Solve for x
    x = 336,191,735.13/21,104.20
  6. Step 6: Final answer
    x = 15,930.09

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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.