Home / 22,921.36-31,631.59-13,367.87

Finding the Fourth Proportional to 22,921.36, 31,631.59 and 13,367.87

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Solution

The fourth proportional to 22,921.36, 31,631.59 and 13,367.87 is: 18,447.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,921.36 : 31,631.59 = 13,367.87 : x
  2. Step 2: Convert to fraction form
    22,921.36/31,631.59 = 13,367.87/x
  3. Step 3: Cross multiply
    22,921.36x = 31,631.59 × 13,367.87
  4. Step 4: Simplify right side
    22,921.36x = 422,846,983.01
  5. Step 5: Solve for x
    x = 422,846,983.01/22,921.36
  6. Step 6: Final answer
    x = 18,447.73

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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.