Home / 20,242.76-27,919.22-13,171.46

Finding the Fourth Proportional to 20,242.76, 27,919.22 and 13,171.46

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Solution

The fourth proportional to 20,242.76, 27,919.22 and 13,171.46 is: 18,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.76 : 27,919.22 = 13,171.46 : x
  2. Step 2: Convert to fraction form
    20,242.76/27,919.22 = 13,171.46/x
  3. Step 3: Cross multiply
    20,242.76x = 27,919.22 × 13,171.46
  4. Step 4: Simplify right side
    20,242.76x = 367,736,889.46
  5. Step 5: Solve for x
    x = 367,736,889.46/20,242.76
  6. Step 6: Final answer
    x = 18,166.34

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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.