Home / 12,318.28-16,998.87-6,729.28

Finding the Fourth Proportional to 12,318.28, 16,998.87 and 6,729.28

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Solution

The fourth proportional to 12,318.28, 16,998.87 and 6,729.28 is: 9,286.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.28 : 16,998.87 = 6,729.28 : x
  2. Step 2: Convert to fraction form
    12,318.28/16,998.87 = 6,729.28/x
  3. Step 3: Cross multiply
    12,318.28x = 16,998.87 × 6,729.28
  4. Step 4: Simplify right side
    12,318.28x = 114,390,155.91
  5. Step 5: Solve for x
    x = 114,390,155.91/12,318.28
  6. Step 6: Final answer
    x = 9,286.21

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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.