Home / 21,251.36-29,327.88-11,819.84

Finding the Fourth Proportional to 21,251.36, 29,327.88 and 11,819.84

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Solution

The fourth proportional to 21,251.36, 29,327.88 and 11,819.84 is: 16,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.36 : 29,327.88 = 11,819.84 : x
  2. Step 2: Convert to fraction form
    21,251.36/29,327.88 = 11,819.84/x
  3. Step 3: Cross multiply
    21,251.36x = 29,327.88 × 11,819.84
  4. Step 4: Simplify right side
    21,251.36x = 346,650,849.14
  5. Step 5: Solve for x
    x = 346,650,849.14/21,251.36
  6. Step 6: Final answer
    x = 16,311.94

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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.