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Finding the Fourth Proportional to 14,640.65, 20,199.11 and 8,266.49

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Solution

The fourth proportional to 14,640.65, 20,199.11 and 8,266.49 is: 11,404.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640.65 : 20,199.11 = 8,266.49 : x
  2. Step 2: Convert to fraction form
    14,640.65/20,199.11 = 8,266.49/x
  3. Step 3: Cross multiply
    14,640.65x = 20,199.11 × 8,266.49
  4. Step 4: Simplify right side
    14,640.65x = 166,975,598.50
  5. Step 5: Solve for x
    x = 166,975,598.50/14,640.65
  6. Step 6: Final answer
    x = 11,404.93

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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.