Home / 11,155.08-15,395.29-6,678.82

Finding the Fourth Proportional to 11,155.08, 15,395.29 and 6,678.82

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Solution

The fourth proportional to 11,155.08, 15,395.29 and 6,678.82 is: 9,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.08 : 15,395.29 = 6,678.82 : x
  2. Step 2: Convert to fraction form
    11,155.08/15,395.29 = 6,678.82/x
  3. Step 3: Cross multiply
    11,155.08x = 15,395.29 × 6,678.82
  4. Step 4: Simplify right side
    11,155.08x = 102,822,370.76
  5. Step 5: Solve for x
    x = 102,822,370.76/11,155.08
  6. Step 6: Final answer
    x = 9,217.54

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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.