Home / 11,155.66-16,741.60-8,990.53

Finding the Fourth Proportional to 11,155.66, 16,741.60 and 8,990.53

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Solution

The fourth proportional to 11,155.66, 16,741.60 and 8,990.53 is: 13,492.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.66 : 16,741.60 = 8,990.53 : x
  2. Step 2: Convert to fraction form
    11,155.66/16,741.60 = 8,990.53/x
  3. Step 3: Cross multiply
    11,155.66x = 16,741.60 × 8,990.53
  4. Step 4: Simplify right side
    11,155.66x = 150,515,812.10
  5. Step 5: Solve for x
    x = 150,515,812.10/11,155.66
  6. Step 6: Final answer
    x = 13,492.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.