Home / 21,687.41-29,944.08-17,143.31

Finding the Fourth Proportional to 21,687.41, 29,944.08 and 17,143.31

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Solution

The fourth proportional to 21,687.41, 29,944.08 and 17,143.31 is: 23,669.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687.41 : 29,944.08 = 17,143.31 : x
  2. Step 2: Convert to fraction form
    21,687.41/29,944.08 = 17,143.31/x
  3. Step 3: Cross multiply
    21,687.41x = 29,944.08 × 17,143.31
  4. Step 4: Simplify right side
    21,687.41x = 513,340,720.97
  5. Step 5: Solve for x
    x = 513,340,720.97/21,687.41
  6. Step 6: Final answer
    x = 23,669.98

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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.