Home / 20,105.47-27,743.30-11,150.73

Finding the Fourth Proportional to 20,105.47, 27,743.30 and 11,150.73

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Solution

The fourth proportional to 20,105.47, 27,743.30 and 11,150.73 is: 15,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.47 : 27,743.30 = 11,150.73 : x
  2. Step 2: Convert to fraction form
    20,105.47/27,743.30 = 11,150.73/x
  3. Step 3: Cross multiply
    20,105.47x = 27,743.30 × 11,150.73
  4. Step 4: Simplify right side
    20,105.47x = 309,357,950.71
  5. Step 5: Solve for x
    x = 309,357,950.71/20,105.47
  6. Step 6: Final answer
    x = 15,386.76

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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.