Home / 12,163.10-16,774.77-8,392.28

Finding the Fourth Proportional to 12,163.10, 16,774.77 and 8,392.28

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Solution

The fourth proportional to 12,163.10, 16,774.77 and 8,392.28 is: 11,574.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.10 : 16,774.77 = 8,392.28 : x
  2. Step 2: Convert to fraction form
    12,163.10/16,774.77 = 8,392.28/x
  3. Step 3: Cross multiply
    12,163.10x = 16,774.77 × 8,392.28
  4. Step 4: Simplify right side
    12,163.10x = 140,778,566.78
  5. Step 5: Solve for x
    x = 140,778,566.78/12,163.10
  6. Step 6: Final answer
    x = 11,574.23

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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.