Home / 20,850.64-28,773.58-11,419.20

Finding the Fourth Proportional to 20,850.64, 28,773.58 and 11,419.20

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Solution

The fourth proportional to 20,850.64, 28,773.58 and 11,419.20 is: 15,758.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.64 : 28,773.58 = 11,419.20 : x
  2. Step 2: Convert to fraction form
    20,850.64/28,773.58 = 11,419.20/x
  3. Step 3: Cross multiply
    20,850.64x = 28,773.58 × 11,419.20
  4. Step 4: Simplify right side
    20,850.64x = 328,571,264.74
  5. Step 5: Solve for x
    x = 328,571,264.74/20,850.64
  6. Step 6: Final answer
    x = 15,758.33

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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.