Home / 21,184.19-31,755.62-10,087.89

Finding the Fourth Proportional to 21,184.19, 31,755.62 and 10,087.89

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Solution

The fourth proportional to 21,184.19, 31,755.62 and 10,087.89 is: 15,121.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.19 : 31,755.62 = 10,087.89 : x
  2. Step 2: Convert to fraction form
    21,184.19/31,755.62 = 10,087.89/x
  3. Step 3: Cross multiply
    21,184.19x = 31,755.62 × 10,087.89
  4. Step 4: Simplify right side
    21,184.19x = 320,347,151.00
  5. Step 5: Solve for x
    x = 320,347,151.00/21,184.19
  6. Step 6: Final answer
    x = 15,121.99

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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.