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Finding the Fourth Proportional to 8,990.22, 13,485.06 and 8,449.14

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Solution

The fourth proportional to 8,990.22, 13,485.06 and 8,449.14 is: 12,673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.22 : 13,485.06 = 8,449.14 : x
  2. Step 2: Convert to fraction form
    8,990.22/13,485.06 = 8,449.14/x
  3. Step 3: Cross multiply
    8,990.22x = 13,485.06 × 8,449.14
  4. Step 4: Simplify right side
    8,990.22x = 113,937,159.85
  5. Step 5: Solve for x
    x = 113,937,159.85/8,990.22
  6. Step 6: Final answer
    x = 12,673.46

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Similar ratio
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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.