Home / 12,190.24-16,822.92-7,479.28

Finding the Fourth Proportional to 12,190.24, 16,822.92 and 7,479.28

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Solution

The fourth proportional to 12,190.24, 16,822.92 and 7,479.28 is: 10,321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.24 : 16,822.92 = 7,479.28 : x
  2. Step 2: Convert to fraction form
    12,190.24/16,822.92 = 7,479.28/x
  3. Step 3: Cross multiply
    12,190.24x = 16,822.92 × 7,479.28
  4. Step 4: Simplify right side
    12,190.24x = 125,823,329.10
  5. Step 5: Solve for x
    x = 125,823,329.10/12,190.24
  6. Step 6: Final answer
    x = 10,321.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.