Home / 21,935.31-30,270.61-11,863.74

Finding the Fourth Proportional to 21,935.31, 30,270.61 and 11,863.74

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Solution

The fourth proportional to 21,935.31, 30,270.61 and 11,863.74 is: 16,371.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.31 : 30,270.61 = 11,863.74 : x
  2. Step 2: Convert to fraction form
    21,935.31/30,270.61 = 11,863.74/x
  3. Step 3: Cross multiply
    21,935.31x = 30,270.61 × 11,863.74
  4. Step 4: Simplify right side
    21,935.31x = 359,122,689.89
  5. Step 5: Solve for x
    x = 359,122,689.89/21,935.31
  6. Step 6: Final answer
    x = 16,371.90

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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.