Home / 15,383.28-21,229.94-11,599.78

Finding the Fourth Proportional to 15,383.28, 21,229.94 and 11,599.78

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Solution

The fourth proportional to 15,383.28, 21,229.94 and 11,599.78 is: 16,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.28 : 21,229.94 = 11,599.78 : x
  2. Step 2: Convert to fraction form
    15,383.28/21,229.94 = 11,599.78/x
  3. Step 3: Cross multiply
    15,383.28x = 21,229.94 × 11,599.78
  4. Step 4: Simplify right side
    15,383.28x = 246,262,633.41
  5. Step 5: Solve for x
    x = 246,262,633.41/15,383.28
  6. Step 6: Final answer
    x = 16,008.46

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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.