Home / 13,297.86-18,358.92-11,821.77

Finding the Fourth Proportional to 13,297.86, 18,358.92 and 11,821.77

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Solution

The fourth proportional to 13,297.86, 18,358.92 and 11,821.77 is: 16,321.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.86 : 18,358.92 = 11,821.77 : x
  2. Step 2: Convert to fraction form
    13,297.86/18,358.92 = 11,821.77/x
  3. Step 3: Cross multiply
    13,297.86x = 18,358.92 × 11,821.77
  4. Step 4: Simplify right side
    13,297.86x = 217,034,929.69
  5. Step 5: Solve for x
    x = 217,034,929.69/13,297.86
  6. Step 6: Final answer
    x = 16,321.04

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1.5x scale

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.