Home / 20,154.28-27,812.42-11,201.80

Finding the Fourth Proportional to 20,154.28, 27,812.42 and 11,201.80

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Solution

The fourth proportional to 20,154.28, 27,812.42 and 11,201.80 is: 15,458.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.28 : 27,812.42 = 11,201.80 : x
  2. Step 2: Convert to fraction form
    20,154.28/27,812.42 = 11,201.80/x
  3. Step 3: Cross multiply
    20,154.28x = 27,812.42 × 11,201.80
  4. Step 4: Simplify right side
    20,154.28x = 311,549,166.36
  5. Step 5: Solve for x
    x = 311,549,166.36/20,154.28
  6. Step 6: Final answer
    x = 15,458.21

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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.