Home / 21,331.62-31,997.97-17,378.55

Finding the Fourth Proportional to 21,331.62, 31,997.97 and 17,378.55

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Solution

The fourth proportional to 21,331.62, 31,997.97 and 17,378.55 is: 26,068.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.62 : 31,997.97 = 17,378.55 : x
  2. Step 2: Convert to fraction form
    21,331.62/31,997.97 = 17,378.55/x
  3. Step 3: Cross multiply
    21,331.62x = 31,997.97 × 17,378.55
  4. Step 4: Simplify right side
    21,331.62x = 556,078,321.54
  5. Step 5: Solve for x
    x = 556,078,321.54/21,331.62
  6. Step 6: Final answer
    x = 26,068.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.