Home / 20,745.08-31,117.84-5,162.71

Finding the Fourth Proportional to 20,745.08, 31,117.84 and 5,162.71

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Solution

The fourth proportional to 20,745.08, 31,117.84 and 5,162.71 is: 7,744.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.08 : 31,117.84 = 5,162.71 : x
  2. Step 2: Convert to fraction form
    20,745.08/31,117.84 = 5,162.71/x
  3. Step 3: Cross multiply
    20,745.08x = 31,117.84 × 5,162.71
  4. Step 4: Simplify right side
    20,745.08x = 160,652,202.34
  5. Step 5: Solve for x
    x = 160,652,202.34/20,745.08
  6. Step 6: Final answer
    x = 7,744.11

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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.