Home / 11,117.36-16,680.90-8,158.70

Finding the Fourth Proportional to 11,117.36, 16,680.90 and 8,158.70

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Solution

The fourth proportional to 11,117.36, 16,680.90 and 8,158.70 is: 12,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.36 : 16,680.90 = 8,158.70 : x
  2. Step 2: Convert to fraction form
    11,117.36/16,680.90 = 8,158.70/x
  3. Step 3: Cross multiply
    11,117.36x = 16,680.90 × 8,158.70
  4. Step 4: Simplify right side
    11,117.36x = 136,094,458.83
  5. Step 5: Solve for x
    x = 136,094,458.83/11,117.36
  6. Step 6: Final answer
    x = 12,241.62

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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.