Home / 20,107.52-27,748.55-11,155.61

Finding the Fourth Proportional to 20,107.52, 27,748.55 and 11,155.61

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Solution

The fourth proportional to 20,107.52, 27,748.55 and 11,155.61 is: 15,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.52 : 27,748.55 = 11,155.61 : x
  2. Step 2: Convert to fraction form
    20,107.52/27,748.55 = 11,155.61/x
  3. Step 3: Cross multiply
    20,107.52x = 27,748.55 × 11,155.61
  4. Step 4: Simplify right side
    20,107.52x = 309,551,807.34
  5. Step 5: Solve for x
    x = 309,551,807.34/20,107.52
  6. Step 6: Final answer
    x = 15,394.83

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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.