Home / 21,179.54-29,228.72-11,748.11

Finding the Fourth Proportional to 21,179.54, 29,228.72 and 11,748.11

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Solution

The fourth proportional to 21,179.54, 29,228.72 and 11,748.11 is: 16,212.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.54 : 29,228.72 = 11,748.11 : x
  2. Step 2: Convert to fraction form
    21,179.54/29,228.72 = 11,748.11/x
  3. Step 3: Cross multiply
    21,179.54x = 29,228.72 × 11,748.11
  4. Step 4: Simplify right side
    21,179.54x = 343,382,012.84
  5. Step 5: Solve for x
    x = 343,382,012.84/21,179.54
  6. Step 6: Final answer
    x = 16,212.92

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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.