Home / 20,155.08-27,812.81-11,202.27

Finding the Fourth Proportional to 20,155.08, 27,812.81 and 11,202.27

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Solution

The fourth proportional to 20,155.08, 27,812.81 and 11,202.27 is: 15,458.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.08 : 27,812.81 = 11,202.27 : x
  2. Step 2: Convert to fraction form
    20,155.08/27,812.81 = 11,202.27/x
  3. Step 3: Cross multiply
    20,155.08x = 27,812.81 × 11,202.27
  4. Step 4: Simplify right side
    20,155.08x = 311,566,607.08
  5. Step 5: Solve for x
    x = 311,566,607.08/20,155.08
  6. Step 6: Final answer
    x = 15,458.47

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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.