Home / 10,880.05-16,321.21-4,640.72

Finding the Fourth Proportional to 10,880.05, 16,321.21 and 4,640.72

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Solution

The fourth proportional to 10,880.05, 16,321.21 and 4,640.72 is: 6,961.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,880.05 : 16,321.21 = 4,640.72 : x
  2. Step 2: Convert to fraction form
    10,880.05/16,321.21 = 4,640.72/x
  3. Step 3: Cross multiply
    10,880.05x = 16,321.21 × 4,640.72
  4. Step 4: Simplify right side
    10,880.05x = 75,742,133.67
  5. Step 5: Solve for x
    x = 75,742,133.67/10,880.05
  6. Step 6: Final answer
    x = 6,961.56

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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.