Home / 20,120.34-27,763.11-11,167.91

Finding the Fourth Proportional to 20,120.34, 27,763.11 and 11,167.91

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Solution

The fourth proportional to 20,120.34, 27,763.11 and 11,167.91 is: 15,410.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.34 : 27,763.11 = 11,167.91 : x
  2. Step 2: Convert to fraction form
    20,120.34/27,763.11 = 11,167.91/x
  3. Step 3: Cross multiply
    20,120.34x = 27,763.11 × 11,167.91
  4. Step 4: Simplify right side
    20,120.34x = 310,055,913.80
  5. Step 5: Solve for x
    x = 310,055,913.80/20,120.34
  6. Step 6: Final answer
    x = 15,410.07

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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.