Home / 21,960.62-30,309.95-17,171.09

Finding the Fourth Proportional to 21,960.62, 30,309.95 and 17,171.09

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Solution

The fourth proportional to 21,960.62, 30,309.95 and 17,171.09 is: 23,699.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.62 : 30,309.95 = 17,171.09 : x
  2. Step 2: Convert to fraction form
    21,960.62/30,309.95 = 17,171.09/x
  3. Step 3: Cross multiply
    21,960.62x = 30,309.95 × 17,171.09
  4. Step 4: Simplify right side
    21,960.62x = 520,454,879.35
  5. Step 5: Solve for x
    x = 520,454,879.35/21,960.62
  6. Step 6: Final answer
    x = 23,699.46

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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.