Home / 22,815.21-31,481.88-12,742.37

Finding the Fourth Proportional to 22,815.21, 31,481.88 and 12,742.37

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Solution

The fourth proportional to 22,815.21, 31,481.88 and 12,742.37 is: 17,582.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.21 : 31,481.88 = 12,742.37 : x
  2. Step 2: Convert to fraction form
    22,815.21/31,481.88 = 12,742.37/x
  3. Step 3: Cross multiply
    22,815.21x = 31,481.88 × 12,742.37
  4. Step 4: Simplify right side
    22,815.21x = 401,153,763.26
  5. Step 5: Solve for x
    x = 401,153,763.26/22,815.21
  6. Step 6: Final answer
    x = 17,582.73

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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.