Home / 22,778.24-31,434.75-13,217.39

Finding the Fourth Proportional to 22,778.24, 31,434.75 and 13,217.39

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Solution

The fourth proportional to 22,778.24, 31,434.75 and 13,217.39 is: 18,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,778.24 : 31,434.75 = 13,217.39 : x
  2. Step 2: Convert to fraction form
    22,778.24/31,434.75 = 13,217.39/x
  3. Step 3: Cross multiply
    22,778.24x = 31,434.75 × 13,217.39
  4. Step 4: Simplify right side
    22,778.24x = 415,485,350.30
  5. Step 5: Solve for x
    x = 415,485,350.30/22,778.24
  6. Step 6: Final answer
    x = 18,240.45

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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.