Home / 14,217.05-19,620.86-8,168.15

Finding the Fourth Proportional to 14,217.05, 19,620.86 and 8,168.15

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Solution

The fourth proportional to 14,217.05, 19,620.86 and 8,168.15 is: 11,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,217.05 : 19,620.86 = 8,168.15 : x
  2. Step 2: Convert to fraction form
    14,217.05/19,620.86 = 8,168.15/x
  3. Step 3: Cross multiply
    14,217.05x = 19,620.86 × 8,168.15
  4. Step 4: Simplify right side
    14,217.05x = 160,265,988.66
  5. Step 5: Solve for x
    x = 160,265,988.66/14,217.05
  6. Step 6: Final answer
    x = 11,272.81

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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.