Home / 21,169.08-31,742.46-11,305.68

Finding the Fourth Proportional to 21,169.08, 31,742.46 and 11,305.68

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Solution

The fourth proportional to 21,169.08, 31,742.46 and 11,305.68 is: 16,952.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.08 : 31,742.46 = 11,305.68 : x
  2. Step 2: Convert to fraction form
    21,169.08/31,742.46 = 11,305.68/x
  3. Step 3: Cross multiply
    21,169.08x = 31,742.46 × 11,305.68
  4. Step 4: Simplify right side
    21,169.08x = 358,870,095.17
  5. Step 5: Solve for x
    x = 358,870,095.17/21,169.08
  6. Step 6: Final answer
    x = 16,952.56

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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.