Home / 12,313.20-18,429.60-9,375.28

Finding the Fourth Proportional to 12,313.20, 18,429.60 and 9,375.28

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Solution

The fourth proportional to 12,313.20, 18,429.60 and 9,375.28 is: 14,032.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.20 : 18,429.60 = 9,375.28 : x
  2. Step 2: Convert to fraction form
    12,313.20/18,429.60 = 9,375.28/x
  3. Step 3: Cross multiply
    12,313.20x = 18,429.60 × 9,375.28
  4. Step 4: Simplify right side
    12,313.20x = 172,782,660.29
  5. Step 5: Solve for x
    x = 172,782,660.29/12,313.20
  6. Step 6: Final answer
    x = 14,032.31

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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.