Home / 11,723.10-16,178.32-6,688.14

Finding the Fourth Proportional to 11,723.10, 16,178.32 and 6,688.14

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Solution

The fourth proportional to 11,723.10, 16,178.32 and 6,688.14 is: 9,229.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,723.10 : 16,178.32 = 6,688.14 : x
  2. Step 2: Convert to fraction form
    11,723.10/16,178.32 = 6,688.14/x
  3. Step 3: Cross multiply
    11,723.10x = 16,178.32 × 6,688.14
  4. Step 4: Simplify right side
    11,723.10x = 108,202,869.12
  5. Step 5: Solve for x
    x = 108,202,869.12/11,723.10
  6. Step 6: Final answer
    x = 9,229.89

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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.