Home / 20,100.64-27,737.52-11,147.80

Finding the Fourth Proportional to 20,100.64, 27,737.52 and 11,147.80

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Solution

The fourth proportional to 20,100.64, 27,737.52 and 11,147.80 is: 15,383.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.64 : 27,737.52 = 11,147.80 : x
  2. Step 2: Convert to fraction form
    20,100.64/27,737.52 = 11,147.80/x
  3. Step 3: Cross multiply
    20,100.64x = 27,737.52 × 11,147.80
  4. Step 4: Simplify right side
    20,100.64x = 309,212,325.46
  5. Step 5: Solve for x
    x = 309,212,325.46/20,100.64
  6. Step 6: Final answer
    x = 15,383.21

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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.