Home / 20,339.72-30,490.92-10,338.56

Finding the Fourth Proportional to 20,339.72, 30,490.92 and 10,338.56

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Solution

The fourth proportional to 20,339.72, 30,490.92 and 10,338.56 is: 15,498.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.72 : 30,490.92 = 10,338.56 : x
  2. Step 2: Convert to fraction form
    20,339.72/30,490.92 = 10,338.56/x
  3. Step 3: Cross multiply
    20,339.72x = 30,490.92 × 10,338.56
  4. Step 4: Simplify right side
    20,339.72x = 315,232,205.88
  5. Step 5: Solve for x
    x = 315,232,205.88/20,339.72
  6. Step 6: Final answer
    x = 15,498.36

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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.