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Finding the Fourth Proportional to 13,762.99, 20,644.48 and 11,321.11

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Solution

The fourth proportional to 13,762.99, 20,644.48 and 11,321.11 is: 16,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762.99 : 20,644.48 = 11,321.11 : x
  2. Step 2: Convert to fraction form
    13,762.99/20,644.48 = 11,321.11/x
  3. Step 3: Cross multiply
    13,762.99x = 20,644.48 × 11,321.11
  4. Step 4: Simplify right side
    13,762.99x = 233,718,325.75
  5. Step 5: Solve for x
    x = 233,718,325.75/13,762.99
  6. Step 6: Final answer
    x = 16,981.66

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Double scale
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Similar ratio
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1.5x scale

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.