Home / 20,852.64-28,773.87-11,899.61

Finding the Fourth Proportional to 20,852.64, 28,773.87 and 11,899.61

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Solution

The fourth proportional to 20,852.64, 28,773.87 and 11,899.61 is: 16,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.64 : 28,773.87 = 11,899.61 : x
  2. Step 2: Convert to fraction form
    20,852.64/28,773.87 = 11,899.61/x
  3. Step 3: Cross multiply
    20,852.64x = 28,773.87 × 11,899.61
  4. Step 4: Simplify right side
    20,852.64x = 342,397,687.32
  5. Step 5: Solve for x
    x = 342,397,687.32/20,852.64
  6. Step 6: Final answer
    x = 16,419.87

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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.