Home / 11,115.91-15,340.44-6,401.71

Finding the Fourth Proportional to 11,115.91, 15,340.44 and 6,401.71

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Solution

The fourth proportional to 11,115.91, 15,340.44 and 6,401.71 is: 8,834.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.91 : 15,340.44 = 6,401.71 : x
  2. Step 2: Convert to fraction form
    11,115.91/15,340.44 = 6,401.71/x
  3. Step 3: Cross multiply
    11,115.91x = 15,340.44 × 6,401.71
  4. Step 4: Simplify right side
    11,115.91x = 98,205,033.81
  5. Step 5: Solve for x
    x = 98,205,033.81/11,115.91
  6. Step 6: Final answer
    x = 8,834.64

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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.