Home / 20,155.60-27,812.82-11,202.04

Finding the Fourth Proportional to 20,155.60, 27,812.82 and 11,202.04

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Solution

The fourth proportional to 20,155.60, 27,812.82 and 11,202.04 is: 15,457.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.60 : 27,812.82 = 11,202.04 : x
  2. Step 2: Convert to fraction form
    20,155.60/27,812.82 = 11,202.04/x
  3. Step 3: Cross multiply
    20,155.60x = 27,812.82 × 11,202.04
  4. Step 4: Simplify right side
    20,155.60x = 311,560,322.15
  5. Step 5: Solve for x
    x = 311,560,322.15/20,155.60
  6. Step 6: Final answer
    x = 15,457.75

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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.