Home / 19,857.62-27,403.45-10,905.71

Finding the Fourth Proportional to 19,857.62, 27,403.45 and 10,905.71

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Solution

The fourth proportional to 19,857.62, 27,403.45 and 10,905.71 is: 15,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.62 : 27,403.45 = 10,905.71 : x
  2. Step 2: Convert to fraction form
    19,857.62/27,403.45 = 10,905.71/x
  3. Step 3: Cross multiply
    19,857.62x = 27,403.45 × 10,905.71
  4. Step 4: Simplify right side
    19,857.62x = 298,853,914.42
  5. Step 5: Solve for x
    x = 298,853,914.42/19,857.62
  6. Step 6: Final answer
    x = 15,049.83

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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.