Home / 20,443.16-28,211.64-11,491.04

Finding the Fourth Proportional to 20,443.16, 28,211.64 and 11,491.04

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Solution

The fourth proportional to 20,443.16, 28,211.64 and 11,491.04 is: 15,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.16 : 28,211.64 = 11,491.04 : x
  2. Step 2: Convert to fraction form
    20,443.16/28,211.64 = 11,491.04/x
  3. Step 3: Cross multiply
    20,443.16x = 28,211.64 × 11,491.04
  4. Step 4: Simplify right side
    20,443.16x = 324,181,083.71
  5. Step 5: Solve for x
    x = 324,181,083.71/20,443.16
  6. Step 6: Final answer
    x = 15,857.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.