Home / 10,521.11-15,781.30-2,623.61

Finding the Fourth Proportional to 10,521.11, 15,781.30 and 2,623.61

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Solution

The fourth proportional to 10,521.11, 15,781.30 and 2,623.61 is: 3,935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.11 : 15,781.30 = 2,623.61 : x
  2. Step 2: Convert to fraction form
    10,521.11/15,781.30 = 2,623.61/x
  3. Step 3: Cross multiply
    10,521.11x = 15,781.30 × 2,623.61
  4. Step 4: Simplify right side
    10,521.11x = 41,404,009.39
  5. Step 5: Solve for x
    x = 41,404,009.39/10,521.11
  6. Step 6: Final answer
    x = 3,935.33

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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.