Home / 11,120.79-16,680.47-4,195.11

Finding the Fourth Proportional to 11,120.79, 16,680.47 and 4,195.11

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Solution

The fourth proportional to 11,120.79, 16,680.47 and 4,195.11 is: 6,292.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.79 : 16,680.47 = 4,195.11 : x
  2. Step 2: Convert to fraction form
    11,120.79/16,680.47 = 4,195.11/x
  3. Step 3: Cross multiply
    11,120.79x = 16,680.47 × 4,195.11
  4. Step 4: Simplify right side
    11,120.79x = 69,976,385.53
  5. Step 5: Solve for x
    x = 69,976,385.53/11,120.79
  6. Step 6: Final answer
    x = 6,292.39

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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.