Home / 21,406.46-29,540.46-11,847.20

Finding the Fourth Proportional to 21,406.46, 29,540.46 and 11,847.20

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Solution

The fourth proportional to 21,406.46, 29,540.46 and 11,847.20 is: 16,348.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.46 : 29,540.46 = 11,847.20 : x
  2. Step 2: Convert to fraction form
    21,406.46/29,540.46 = 11,847.20/x
  3. Step 3: Cross multiply
    21,406.46x = 29,540.46 × 11,847.20
  4. Step 4: Simplify right side
    21,406.46x = 349,971,737.71
  5. Step 5: Solve for x
    x = 349,971,737.71/21,406.46
  6. Step 6: Final answer
    x = 16,348.88

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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.