Home / 21,919.26-30,248.56-12,487.82

Finding the Fourth Proportional to 21,919.26, 30,248.56 and 12,487.82

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Solution

The fourth proportional to 21,919.26, 30,248.56 and 12,487.82 is: 17,233.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.26 : 30,248.56 = 12,487.82 : x
  2. Step 2: Convert to fraction form
    21,919.26/30,248.56 = 12,487.82/x
  3. Step 3: Cross multiply
    21,919.26x = 30,248.56 × 12,487.82
  4. Step 4: Simplify right side
    21,919.26x = 377,738,572.54
  5. Step 5: Solve for x
    x = 377,738,572.54/21,919.26
  6. Step 6: Final answer
    x = 17,233.18

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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.