Home / 10,989.24-16,485.66-5,442.81

Finding the Fourth Proportional to 10,989.24, 16,485.66 and 5,442.81

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Solution

The fourth proportional to 10,989.24, 16,485.66 and 5,442.81 is: 8,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.24 : 16,485.66 = 5,442.81 : x
  2. Step 2: Convert to fraction form
    10,989.24/16,485.66 = 5,442.81/x
  3. Step 3: Cross multiply
    10,989.24x = 16,485.66 × 5,442.81
  4. Step 4: Simplify right side
    10,989.24x = 89,728,315.10
  5. Step 5: Solve for x
    x = 89,728,315.10/10,989.24
  6. Step 6: Final answer
    x = 8,165.11

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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.