Home / 10,976.40-16,464.60-9,129.60

Finding the Fourth Proportional to 10,976.40, 16,464.60 and 9,129.60

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Solution

The fourth proportional to 10,976.40, 16,464.60 and 9,129.60 is: 13,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,976.40 : 16,464.60 = 9,129.60 : x
  2. Step 2: Convert to fraction form
    10,976.40/16,464.60 = 9,129.60/x
  3. Step 3: Cross multiply
    10,976.40x = 16,464.60 × 9,129.60
  4. Step 4: Simplify right side
    10,976.40x = 150,315,212.16
  5. Step 5: Solve for x
    x = 150,315,212.16/10,976.40
  6. Step 6: Final answer
    x = 13,694.40

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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.