Home / 20,155.21-27,814.62-11,202.55

Finding the Fourth Proportional to 20,155.21, 27,814.62 and 11,202.55

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Solution

The fourth proportional to 20,155.21, 27,814.62 and 11,202.55 is: 15,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.21 : 27,814.62 = 11,202.55 : x
  2. Step 2: Convert to fraction form
    20,155.21/27,814.62 = 11,202.55/x
  3. Step 3: Cross multiply
    20,155.21x = 27,814.62 × 11,202.55
  4. Step 4: Simplify right side
    20,155.21x = 311,594,671.28
  5. Step 5: Solve for x
    x = 311,594,671.28/20,155.21
  6. Step 6: Final answer
    x = 15,459.76

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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.