Home / 21,344.40-29,454.66-11,912.76

Finding the Fourth Proportional to 21,344.40, 29,454.66 and 11,912.76

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Solution

The fourth proportional to 21,344.40, 29,454.66 and 11,912.76 is: 16,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.40 : 29,454.66 = 11,912.76 : x
  2. Step 2: Convert to fraction form
    21,344.40/29,454.66 = 11,912.76/x
  3. Step 3: Cross multiply
    21,344.40x = 29,454.66 × 11,912.76
  4. Step 4: Simplify right side
    21,344.40x = 350,886,295.46
  5. Step 5: Solve for x
    x = 350,886,295.46/21,344.40
  6. Step 6: Final answer
    x = 16,439.27

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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.