Home / 20,847.64-28,772.22-12,463.96

Finding the Fourth Proportional to 20,847.64, 28,772.22 and 12,463.96

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Solution

The fourth proportional to 20,847.64, 28,772.22 and 12,463.96 is: 17,201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.64 : 28,772.22 = 12,463.96 : x
  2. Step 2: Convert to fraction form
    20,847.64/28,772.22 = 12,463.96/x
  3. Step 3: Cross multiply
    20,847.64x = 28,772.22 × 12,463.96
  4. Step 4: Simplify right side
    20,847.64x = 358,615,799.19
  5. Step 5: Solve for x
    x = 358,615,799.19/20,847.64
  6. Step 6: Final answer
    x = 17,201.75

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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.