Home / 21,367.41-29,479.19-13,406.73

Finding the Fourth Proportional to 21,367.41, 29,479.19 and 13,406.73

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Solution

The fourth proportional to 21,367.41, 29,479.19 and 13,406.73 is: 18,496.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.41 : 29,479.19 = 13,406.73 : x
  2. Step 2: Convert to fraction form
    21,367.41/29,479.19 = 13,406.73/x
  3. Step 3: Cross multiply
    21,367.41x = 29,479.19 × 13,406.73
  4. Step 4: Simplify right side
    21,367.41x = 395,219,473.92
  5. Step 5: Solve for x
    x = 395,219,473.92/21,367.41
  6. Step 6: Final answer
    x = 18,496.37

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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.