Home / 21,778.83-30,046.01-15,797.39

Finding the Fourth Proportional to 21,778.83, 30,046.01 and 15,797.39

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Solution

The fourth proportional to 21,778.83, 30,046.01 and 15,797.39 is: 21,794.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.83 : 30,046.01 = 15,797.39 : x
  2. Step 2: Convert to fraction form
    21,778.83/30,046.01 = 15,797.39/x
  3. Step 3: Cross multiply
    21,778.83x = 30,046.01 × 15,797.39
  4. Step 4: Simplify right side
    21,778.83x = 474,648,308.70
  5. Step 5: Solve for x
    x = 474,648,308.70/21,778.83
  6. Step 6: Final answer
    x = 21,794.02

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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.