Home / 20,108.12-27,748.26-11,155.52

Finding the Fourth Proportional to 20,108.12, 27,748.26 and 11,155.52

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Solution

The fourth proportional to 20,108.12, 27,748.26 and 11,155.52 is: 15,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.12 : 27,748.26 = 11,155.52 : x
  2. Step 2: Convert to fraction form
    20,108.12/27,748.26 = 11,155.52/x
  3. Step 3: Cross multiply
    20,108.12x = 27,748.26 × 11,155.52
  4. Step 4: Simplify right side
    20,108.12x = 309,546,338.77
  5. Step 5: Solve for x
    x = 309,546,338.77/20,108.12
  6. Step 6: Final answer
    x = 15,394.10

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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.