Home / 20,775.54-31,161.47-5,193.15

Finding the Fourth Proportional to 20,775.54, 31,161.47 and 5,193.15

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Solution

The fourth proportional to 20,775.54, 31,161.47 and 5,193.15 is: 7,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.54 : 31,161.47 = 5,193.15 : x
  2. Step 2: Convert to fraction form
    20,775.54/31,161.47 = 5,193.15/x
  3. Step 3: Cross multiply
    20,775.54x = 31,161.47 × 5,193.15
  4. Step 4: Simplify right side
    20,775.54x = 161,826,161.96
  5. Step 5: Solve for x
    x = 161,826,161.96/20,775.54
  6. Step 6: Final answer
    x = 7,789.26

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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.