Home / 21,179.79-29,230.61-11,748.96

Finding the Fourth Proportional to 21,179.79, 29,230.61 and 11,748.96

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Solution

The fourth proportional to 21,179.79, 29,230.61 and 11,748.96 is: 16,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.79 : 29,230.61 = 11,748.96 : x
  2. Step 2: Convert to fraction form
    21,179.79/29,230.61 = 11,748.96/x
  3. Step 3: Cross multiply
    21,179.79x = 29,230.61 × 11,748.96
  4. Step 4: Simplify right side
    21,179.79x = 343,429,208.92
  5. Step 5: Solve for x
    x = 343,429,208.92/21,179.79
  6. Step 6: Final answer
    x = 16,214.95

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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.