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Finding the Fourth Proportional to 13,956.98, 20,950.06 and 8,766.50

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Solution

The fourth proportional to 13,956.98, 20,950.06 and 8,766.50 is: 13,158.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.98 : 20,950.06 = 8,766.50 : x
  2. Step 2: Convert to fraction form
    13,956.98/20,950.06 = 8,766.50/x
  3. Step 3: Cross multiply
    13,956.98x = 20,950.06 × 8,766.50
  4. Step 4: Simplify right side
    13,956.98x = 183,658,700.99
  5. Step 5: Solve for x
    x = 183,658,700.99/13,956.98
  6. Step 6: Final answer
    x = 13,158.91

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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.