Home / 20,847.64-28,761.66-12,773.92

Finding the Fourth Proportional to 20,847.64, 28,761.66 and 12,773.92

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Solution

The fourth proportional to 20,847.64, 28,761.66 and 12,773.92 is: 17,623.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.64 : 28,761.66 = 12,773.92 : x
  2. Step 2: Convert to fraction form
    20,847.64/28,761.66 = 12,773.92/x
  3. Step 3: Cross multiply
    20,847.64x = 28,761.66 × 12,773.92
  4. Step 4: Simplify right side
    20,847.64x = 367,399,143.91
  5. Step 5: Solve for x
    x = 367,399,143.91/20,847.64
  6. Step 6: Final answer
    x = 17,623.06

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1.5x scale

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.