Home / 11,621.60-17,421.84-4,691.36

Finding the Fourth Proportional to 11,621.60, 17,421.84 and 4,691.36

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Solution

The fourth proportional to 11,621.60, 17,421.84 and 4,691.36 is: 7,032.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.60 : 17,421.84 = 4,691.36 : x
  2. Step 2: Convert to fraction form
    11,621.60/17,421.84 = 4,691.36/x
  3. Step 3: Cross multiply
    11,621.60x = 17,421.84 × 4,691.36
  4. Step 4: Simplify right side
    11,621.60x = 81,732,123.30
  5. Step 5: Solve for x
    x = 81,732,123.30/11,621.60
  6. Step 6: Final answer
    x = 7,032.78

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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.