Home / 11,697.06-16,142.16-6,391.77

Finding the Fourth Proportional to 11,697.06, 16,142.16 and 6,391.77

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Solution

The fourth proportional to 11,697.06, 16,142.16 and 6,391.77 is: 8,820.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,697.06 : 16,142.16 = 6,391.77 : x
  2. Step 2: Convert to fraction form
    11,697.06/16,142.16 = 6,391.77/x
  3. Step 3: Cross multiply
    11,697.06x = 16,142.16 × 6,391.77
  4. Step 4: Simplify right side
    11,697.06x = 103,176,974.02
  5. Step 5: Solve for x
    x = 103,176,974.02/11,697.06
  6. Step 6: Final answer
    x = 8,820.76

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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.