Home / 21,340.30-29,447.85-11,908.66

Finding the Fourth Proportional to 21,340.30, 29,447.85 and 11,908.66

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Solution

The fourth proportional to 21,340.30, 29,447.85 and 11,908.66 is: 16,432.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.30 : 29,447.85 = 11,908.66 : x
  2. Step 2: Convert to fraction form
    21,340.30/29,447.85 = 11,908.66/x
  3. Step 3: Cross multiply
    21,340.30x = 29,447.85 × 11,908.66
  4. Step 4: Simplify right side
    21,340.30x = 350,684,433.38
  5. Step 5: Solve for x
    x = 350,684,433.38/21,340.30
  6. Step 6: Final answer
    x = 16,432.97

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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.