Home / 20,874.69-31,301.24-9,174.51

Finding the Fourth Proportional to 20,874.69, 31,301.24 and 9,174.51

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Solution

The fourth proportional to 20,874.69, 31,301.24 and 9,174.51 is: 13,757.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.69 : 31,301.24 = 9,174.51 : x
  2. Step 2: Convert to fraction form
    20,874.69/31,301.24 = 9,174.51/x
  3. Step 3: Cross multiply
    20,874.69x = 31,301.24 × 9,174.51
  4. Step 4: Simplify right side
    20,874.69x = 287,173,493.52
  5. Step 5: Solve for x
    x = 287,173,493.52/20,874.69
  6. Step 6: Final answer
    x = 13,757.02

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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.