Home / 11,811.80-16,299.78-6,772.51

Finding the Fourth Proportional to 11,811.80, 16,299.78 and 6,772.51

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Solution

The fourth proportional to 11,811.80, 16,299.78 and 6,772.51 is: 9,345.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.80 : 16,299.78 = 6,772.51 : x
  2. Step 2: Convert to fraction form
    11,811.80/16,299.78 = 6,772.51/x
  3. Step 3: Cross multiply
    11,811.80x = 16,299.78 × 6,772.51
  4. Step 4: Simplify right side
    11,811.80x = 110,390,423.05
  5. Step 5: Solve for x
    x = 110,390,423.05/11,811.80
  6. Step 6: Final answer
    x = 9,345.77

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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.