Home / 22,778.49-31,434.34-13,220.24

Finding the Fourth Proportional to 22,778.49, 31,434.34 and 13,220.24

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Solution

The fourth proportional to 22,778.49, 31,434.34 and 13,220.24 is: 18,243.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,778.49 : 31,434.34 = 13,220.24 : x
  2. Step 2: Convert to fraction form
    22,778.49/31,434.34 = 13,220.24/x
  3. Step 3: Cross multiply
    22,778.49x = 31,434.34 × 13,220.24
  4. Step 4: Simplify right side
    22,778.49x = 415,569,519.04
  5. Step 5: Solve for x
    x = 415,569,519.04/22,778.49
  6. Step 6: Final answer
    x = 18,243.95

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Double scale
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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.