Home / 21,935.20-30,270.48-11,863.66

Finding the Fourth Proportional to 21,935.20, 30,270.48 and 11,863.66

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Solution

The fourth proportional to 21,935.20, 30,270.48 and 11,863.66 is: 16,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.20 : 30,270.48 = 11,863.66 : x
  2. Step 2: Convert to fraction form
    21,935.20/30,270.48 = 11,863.66/x
  3. Step 3: Cross multiply
    21,935.20x = 30,270.48 × 11,863.66
  4. Step 4: Simplify right side
    21,935.20x = 359,118,531.40
  5. Step 5: Solve for x
    x = 359,118,531.40/21,935.20
  6. Step 6: Final answer
    x = 16,371.79

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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.