Home / 21,844.35-30,147.80-13,789.71

Finding the Fourth Proportional to 21,844.35, 30,147.80 and 13,789.71

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Solution

The fourth proportional to 21,844.35, 30,147.80 and 13,789.71 is: 19,031.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,844.35 : 30,147.80 = 13,789.71 : x
  2. Step 2: Convert to fraction form
    21,844.35/30,147.80 = 13,789.71/x
  3. Step 3: Cross multiply
    21,844.35x = 30,147.80 × 13,789.71
  4. Step 4: Simplify right side
    21,844.35x = 415,729,350.19
  5. Step 5: Solve for x
    x = 415,729,350.19/21,844.35
  6. Step 6: Final answer
    x = 19,031.44

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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.