Home / 21,257.29-29,334.85-11,696.86

Finding the Fourth Proportional to 21,257.29, 29,334.85 and 11,696.86

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Solution

The fourth proportional to 21,257.29, 29,334.85 and 11,696.86 is: 16,141.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.29 : 29,334.85 = 11,696.86 : x
  2. Step 2: Convert to fraction form
    21,257.29/29,334.85 = 11,696.86/x
  3. Step 3: Cross multiply
    21,257.29x = 29,334.85 × 11,696.86
  4. Step 4: Simplify right side
    21,257.29x = 343,125,633.57
  5. Step 5: Solve for x
    x = 343,125,633.57/21,257.29
  6. Step 6: Final answer
    x = 16,141.55

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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.