Home / 21,184.22-31,768.68-6,388.58

Finding the Fourth Proportional to 21,184.22, 31,768.68 and 6,388.58

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Solution

The fourth proportional to 21,184.22, 31,768.68 and 6,388.58 is: 9,580.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.22 : 31,768.68 = 6,388.58 : x
  2. Step 2: Convert to fraction form
    21,184.22/31,768.68 = 6,388.58/x
  3. Step 3: Cross multiply
    21,184.22x = 31,768.68 × 6,388.58
  4. Step 4: Simplify right side
    21,184.22x = 202,956,753.67
  5. Step 5: Solve for x
    x = 202,956,753.67/21,184.22
  6. Step 6: Final answer
    x = 9,580.56

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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.