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Finding the Fourth Proportional to 14,611.08, 20,163.22 and 7,987.08

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Solution

The fourth proportional to 14,611.08, 20,163.22 and 7,987.08 is: 11,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,611.08 : 20,163.22 = 7,987.08 : x
  2. Step 2: Convert to fraction form
    14,611.08/20,163.22 = 7,987.08/x
  3. Step 3: Cross multiply
    14,611.08x = 20,163.22 × 7,987.08
  4. Step 4: Simplify right side
    14,611.08x = 161,045,251.20
  5. Step 5: Solve for x
    x = 161,045,251.20/14,611.08
  6. Step 6: Final answer
    x = 11,022.13

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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.