Home / 10,989.93-16,489.68-5,440.11

Finding the Fourth Proportional to 10,989.93, 16,489.68 and 5,440.11

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Solution

The fourth proportional to 10,989.93, 16,489.68 and 5,440.11 is: 8,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.93 : 16,489.68 = 5,440.11 : x
  2. Step 2: Convert to fraction form
    10,989.93/16,489.68 = 5,440.11/x
  3. Step 3: Cross multiply
    10,989.93x = 16,489.68 × 5,440.11
  4. Step 4: Simplify right side
    10,989.93x = 89,705,683.58
  5. Step 5: Solve for x
    x = 89,705,683.58/10,989.93
  6. Step 6: Final answer
    x = 8,162.54

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1.5x scale

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.