Home / 12,311.52-16,989.96-6,722.52

Finding the Fourth Proportional to 12,311.52, 16,989.96 and 6,722.52

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Solution

The fourth proportional to 12,311.52, 16,989.96 and 6,722.52 is: 9,277.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.52 : 16,989.96 = 6,722.52 : x
  2. Step 2: Convert to fraction form
    12,311.52/16,989.96 = 6,722.52/x
  3. Step 3: Cross multiply
    12,311.52x = 16,989.96 × 6,722.52
  4. Step 4: Simplify right side
    12,311.52x = 114,215,345.90
  5. Step 5: Solve for x
    x = 114,215,345.90/12,311.52
  6. Step 6: Final answer
    x = 9,277.11

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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.