Home / 21,913.56-30,239.10-12,481.80

Finding the Fourth Proportional to 21,913.56, 30,239.10 and 12,481.80

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Solution

The fourth proportional to 21,913.56, 30,239.10 and 12,481.80 is: 17,223.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.56 : 30,239.10 = 12,481.80 : x
  2. Step 2: Convert to fraction form
    21,913.56/30,239.10 = 12,481.80/x
  3. Step 3: Cross multiply
    21,913.56x = 30,239.10 × 12,481.80
  4. Step 4: Simplify right side
    21,913.56x = 377,438,398.38
  5. Step 5: Solve for x
    x = 377,438,398.38/21,913.56
  6. Step 6: Final answer
    x = 17,223.97

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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.