Home / 11,183.36-15,432.70-6,403.15

Finding the Fourth Proportional to 11,183.36, 15,432.70 and 6,403.15

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Solution

The fourth proportional to 11,183.36, 15,432.70 and 6,403.15 is: 8,836.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,183.36 : 15,432.70 = 6,403.15 : x
  2. Step 2: Convert to fraction form
    11,183.36/15,432.70 = 6,403.15/x
  3. Step 3: Cross multiply
    11,183.36x = 15,432.70 × 6,403.15
  4. Step 4: Simplify right side
    11,183.36x = 98,817,893.01
  5. Step 5: Solve for x
    x = 98,817,893.01/11,183.36
  6. Step 6: Final answer
    x = 8,836.15

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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.