Home / 11,155.91-15,395.60-6,678.77

Finding the Fourth Proportional to 11,155.91, 15,395.60 and 6,678.77

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Solution

The fourth proportional to 11,155.91, 15,395.60 and 6,678.77 is: 9,216.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.91 : 15,395.60 = 6,678.77 : x
  2. Step 2: Convert to fraction form
    11,155.91/15,395.60 = 6,678.77/x
  3. Step 3: Cross multiply
    11,155.91x = 15,395.60 × 6,678.77
  4. Step 4: Simplify right side
    11,155.91x = 102,823,611.13
  5. Step 5: Solve for x
    x = 102,823,611.13/11,155.91
  6. Step 6: Final answer
    x = 9,216.97

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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.