Home / 21,324.75-31,987.13-5,742.38

Finding the Fourth Proportional to 21,324.75, 31,987.13 and 5,742.38

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Solution

The fourth proportional to 21,324.75, 31,987.13 and 5,742.38 is: 8,613.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.75 : 31,987.13 = 5,742.38 : x
  2. Step 2: Convert to fraction form
    21,324.75/31,987.13 = 5,742.38/x
  3. Step 3: Cross multiply
    21,324.75x = 31,987.13 × 5,742.38
  4. Step 4: Simplify right side
    21,324.75x = 183,682,066.92
  5. Step 5: Solve for x
    x = 183,682,066.92/21,324.75
  6. Step 6: Final answer
    x = 8,613.56

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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.