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Finding the Fourth Proportional to 8,976.66, 13,486.89 and 8,479.32

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Solution

The fourth proportional to 8,976.66, 13,486.89 and 8,479.32 is: 12,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.66 : 13,486.89 = 8,479.32 : x
  2. Step 2: Convert to fraction form
    8,976.66/13,486.89 = 8,479.32/x
  3. Step 3: Cross multiply
    8,976.66x = 13,486.89 × 8,479.32
  4. Step 4: Simplify right side
    8,976.66x = 114,359,656.11
  5. Step 5: Solve for x
    x = 114,359,656.11/8,976.66
  6. Step 6: Final answer
    x = 12,739.67

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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.