Home / 20,262.05-30,372.28-7,778.71

Finding the Fourth Proportional to 20,262.05, 30,372.28 and 7,778.71

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Solution

The fourth proportional to 20,262.05, 30,372.28 and 7,778.71 is: 11,660.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.05 : 30,372.28 = 7,778.71 : x
  2. Step 2: Convert to fraction form
    20,262.05/30,372.28 = 7,778.71/x
  3. Step 3: Cross multiply
    20,262.05x = 30,372.28 × 7,778.71
  4. Step 4: Simplify right side
    20,262.05x = 236,257,062.78
  5. Step 5: Solve for x
    x = 236,257,062.78/20,262.05
  6. Step 6: Final answer
    x = 11,660.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.