Home / 20,101.77-27,740.61-11,149.85

Finding the Fourth Proportional to 20,101.77, 27,740.61 and 11,149.85

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Solution

The fourth proportional to 20,101.77, 27,740.61 and 11,149.85 is: 15,386.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.77 : 27,740.61 = 11,149.85 : x
  2. Step 2: Convert to fraction form
    20,101.77/27,740.61 = 11,149.85/x
  3. Step 3: Cross multiply
    20,101.77x = 27,740.61 × 11,149.85
  4. Step 4: Simplify right side
    20,101.77x = 309,303,709.76
  5. Step 5: Solve for x
    x = 309,303,709.76/20,101.77
  6. Step 6: Final answer
    x = 15,386.89

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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.