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Finding the Fourth Proportional to 14,940.34, 20,615.34 and 8,651.50

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Solution

The fourth proportional to 14,940.34, 20,615.34 and 8,651.50 is: 11,937.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,940.34 : 20,615.34 = 8,651.50 : x
  2. Step 2: Convert to fraction form
    14,940.34/20,615.34 = 8,651.50/x
  3. Step 3: Cross multiply
    14,940.34x = 20,615.34 × 8,651.50
  4. Step 4: Simplify right side
    14,940.34x = 178,353,614.01
  5. Step 5: Solve for x
    x = 178,353,614.01/14,940.34
  6. Step 6: Final answer
    x = 11,937.72

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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.