Home / 11,728.10-16,180.76-6,688.68

Finding the Fourth Proportional to 11,728.10, 16,180.76 and 6,688.68

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Solution

The fourth proportional to 11,728.10, 16,180.76 and 6,688.68 is: 9,228.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.10 : 16,180.76 = 6,688.68 : x
  2. Step 2: Convert to fraction form
    11,728.10/16,180.76 = 6,688.68/x
  3. Step 3: Cross multiply
    11,728.10x = 16,180.76 × 6,688.68
  4. Step 4: Simplify right side
    11,728.10x = 108,227,925.80
  5. Step 5: Solve for x
    x = 108,227,925.80/11,728.10
  6. Step 6: Final answer
    x = 9,228.09

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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.