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Finding the Fourth Proportional to 14,705.91, 20,294.07 and 8,659.67

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Solution

The fourth proportional to 14,705.91, 20,294.07 and 8,659.67 is: 11,950.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,705.91 : 20,294.07 = 8,659.67 : x
  2. Step 2: Convert to fraction form
    14,705.91/20,294.07 = 8,659.67/x
  3. Step 3: Cross multiply
    14,705.91x = 20,294.07 × 8,659.67
  4. Step 4: Simplify right side
    14,705.91x = 175,739,847.69
  5. Step 5: Solve for x
    x = 175,739,847.69/14,705.91
  6. Step 6: Final answer
    x = 11,950.29

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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.