Home / 12,161.88-16,782.17-8,976.92

Finding the Fourth Proportional to 12,161.88, 16,782.17 and 8,976.92

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Solution

The fourth proportional to 12,161.88, 16,782.17 and 8,976.92 is: 12,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.88 : 16,782.17 = 8,976.92 : x
  2. Step 2: Convert to fraction form
    12,161.88/16,782.17 = 8,976.92/x
  3. Step 3: Cross multiply
    12,161.88x = 16,782.17 × 8,976.92
  4. Step 4: Simplify right side
    12,161.88x = 150,652,068.72
  5. Step 5: Solve for x
    x = 150,652,068.72/12,161.88
  6. Step 6: Final answer
    x = 12,387.24

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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.