Home / 21,101.19-31,651.79-5,518.68

Finding the Fourth Proportional to 21,101.19, 31,651.79 and 5,518.68

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Solution

The fourth proportional to 21,101.19, 31,651.79 and 5,518.68 is: 8,278.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.19 : 31,651.79 = 5,518.68 : x
  2. Step 2: Convert to fraction form
    21,101.19/31,651.79 = 5,518.68/x
  3. Step 3: Cross multiply
    21,101.19x = 31,651.79 × 5,518.68
  4. Step 4: Simplify right side
    21,101.19x = 174,676,100.44
  5. Step 5: Solve for x
    x = 174,676,100.44/21,101.19
  6. Step 6: Final answer
    x = 8,278.02

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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.