Home / 11,116.36-15,340.35-6,400.68

Finding the Fourth Proportional to 11,116.36, 15,340.35 and 6,400.68

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Solution

The fourth proportional to 11,116.36, 15,340.35 and 6,400.68 is: 8,832.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.36 : 15,340.35 = 6,400.68 : x
  2. Step 2: Convert to fraction form
    11,116.36/15,340.35 = 6,400.68/x
  3. Step 3: Cross multiply
    11,116.36x = 15,340.35 × 6,400.68
  4. Step 4: Simplify right side
    11,116.36x = 98,188,671.44
  5. Step 5: Solve for x
    x = 98,188,671.44/11,116.36
  6. Step 6: Final answer
    x = 8,832.81

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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.