Home / 15,297.16-21,110.32-8,491

Finding the Fourth Proportional to 15,297.16, 21,110.32 and 8,491

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Solution

The fourth proportional to 15,297.16, 21,110.32 and 8,491 is: 11,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.16 : 21,110.32 = 8,491 : x
  2. Step 2: Convert to fraction form
    15,297.16/21,110.32 = 8,491/x
  3. Step 3: Cross multiply
    15,297.16x = 21,110.32 × 8,491
  4. Step 4: Simplify right side
    15,297.16x = 179,247,727.12
  5. Step 5: Solve for x
    x = 179,247,727.12/15,297.16
  6. Step 6: Final answer
    x = 11,717.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.