Home / 21,249.53-31,874.25-10,122.47

Finding the Fourth Proportional to 21,249.53, 31,874.25 and 10,122.47

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Solution

The fourth proportional to 21,249.53, 31,874.25 and 10,122.47 is: 15,183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.53 : 31,874.25 = 10,122.47 : x
  2. Step 2: Convert to fraction form
    21,249.53/31,874.25 = 10,122.47/x
  3. Step 3: Cross multiply
    21,249.53x = 31,874.25 × 10,122.47
  4. Step 4: Simplify right side
    21,249.53x = 322,646,139.40
  5. Step 5: Solve for x
    x = 322,646,139.40/21,249.53
  6. Step 6: Final answer
    x = 15,183.68

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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.