Home / 21,186.73-31,757.91-7,141.92

Finding the Fourth Proportional to 21,186.73, 31,757.91 and 7,141.92

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Solution

The fourth proportional to 21,186.73, 31,757.91 and 7,141.92 is: 10,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.73 : 31,757.91 = 7,141.92 : x
  2. Step 2: Convert to fraction form
    21,186.73/31,757.91 = 7,141.92/x
  3. Step 3: Cross multiply
    21,186.73x = 31,757.91 × 7,141.92
  4. Step 4: Simplify right side
    21,186.73x = 226,812,452.59
  5. Step 5: Solve for x
    x = 226,812,452.59/21,186.73
  6. Step 6: Final answer
    x = 10,705.40

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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.