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Finding the Fourth Proportional to 14,479.53, 21,723.05 and 8,480.67

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Solution

The fourth proportional to 14,479.53, 21,723.05 and 8,480.67 is: 12,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,479.53 : 21,723.05 = 8,480.67 : x
  2. Step 2: Convert to fraction form
    14,479.53/21,723.05 = 8,480.67/x
  3. Step 3: Cross multiply
    14,479.53x = 21,723.05 × 8,480.67
  4. Step 4: Simplify right side
    14,479.53x = 184,225,976.04
  5. Step 5: Solve for x
    x = 184,225,976.04/14,479.53
  6. Step 6: Final answer
    x = 12,723.20

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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.