Home / 20,775.35-31,161.99-7,626.72

Finding the Fourth Proportional to 20,775.35, 31,161.99 and 7,626.72

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Solution

The fourth proportional to 20,775.35, 31,161.99 and 7,626.72 is: 11,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.35 : 31,161.99 = 7,626.72 : x
  2. Step 2: Convert to fraction form
    20,775.35/31,161.99 = 7,626.72/x
  3. Step 3: Cross multiply
    20,775.35x = 31,161.99 × 7,626.72
  4. Step 4: Simplify right side
    20,775.35x = 237,663,772.37
  5. Step 5: Solve for x
    x = 237,663,772.37/20,775.35
  6. Step 6: Final answer
    x = 11,439.70

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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.