Home / 22,910.39-31,610.34-13,217.49

Finding the Fourth Proportional to 22,910.39, 31,610.34 and 13,217.49

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Solution

The fourth proportional to 22,910.39, 31,610.34 and 13,217.49 is: 18,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,910.39 : 31,610.34 = 13,217.49 : x
  2. Step 2: Convert to fraction form
    22,910.39/31,610.34 = 13,217.49/x
  3. Step 3: Cross multiply
    22,910.39x = 31,610.34 × 13,217.49
  4. Step 4: Simplify right side
    22,910.39x = 417,809,306.86
  5. Step 5: Solve for x
    x = 417,809,306.86/22,910.39
  6. Step 6: Final answer
    x = 18,236.68

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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.