Home / 21,101.96-31,656.46-9,414.74

Finding the Fourth Proportional to 21,101.96, 31,656.46 and 9,414.74

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Solution

The fourth proportional to 21,101.96, 31,656.46 and 9,414.74 is: 14,123.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.96 : 31,656.46 = 9,414.74 : x
  2. Step 2: Convert to fraction form
    21,101.96/31,656.46 = 9,414.74/x
  3. Step 3: Cross multiply
    21,101.96x = 31,656.46 × 9,414.74
  4. Step 4: Simplify right side
    21,101.96x = 298,037,340.22
  5. Step 5: Solve for x
    x = 298,037,340.22/21,101.96
  6. Step 6: Final answer
    x = 14,123.68

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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.