Home / 11,188.77-15,440.90-6,408.75

Finding the Fourth Proportional to 11,188.77, 15,440.90 and 6,408.75

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Solution

The fourth proportional to 11,188.77, 15,440.90 and 6,408.75 is: 8,844.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.77 : 15,440.90 = 6,408.75 : x
  2. Step 2: Convert to fraction form
    11,188.77/15,440.90 = 6,408.75/x
  3. Step 3: Cross multiply
    11,188.77x = 15,440.90 × 6,408.75
  4. Step 4: Simplify right side
    11,188.77x = 98,956,893.73
  5. Step 5: Solve for x
    x = 98,956,893.73/11,188.77
  6. Step 6: Final answer
    x = 8,844.31

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Half scale
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Double scale
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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.