Home / 22,544.40-31,078.30-15,809.72

Finding the Fourth Proportional to 22,544.40, 31,078.30 and 15,809.72

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Solution

The fourth proportional to 22,544.40, 31,078.30 and 15,809.72 is: 21,794.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,544.40 : 31,078.30 = 15,809.72 : x
  2. Step 2: Convert to fraction form
    22,544.40/31,078.30 = 15,809.72/x
  3. Step 3: Cross multiply
    22,544.40x = 31,078.30 × 15,809.72
  4. Step 4: Simplify right side
    22,544.40x = 491,339,221.08
  5. Step 5: Solve for x
    x = 491,339,221.08/22,544.40
  6. Step 6: Final answer
    x = 21,794.29

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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.