Home / 12,311.13-16,989.36-6,722.13

Finding the Fourth Proportional to 12,311.13, 16,989.36 and 6,722.13

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Solution

The fourth proportional to 12,311.13, 16,989.36 and 6,722.13 is: 9,276.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.13 : 16,989.36 = 6,722.13 : x
  2. Step 2: Convert to fraction form
    12,311.13/16,989.36 = 6,722.13/x
  3. Step 3: Cross multiply
    12,311.13x = 16,989.36 × 6,722.13
  4. Step 4: Simplify right side
    12,311.13x = 114,204,686.54
  5. Step 5: Solve for x
    x = 114,204,686.54/12,311.13
  6. Step 6: Final answer
    x = 9,276.54

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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.