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Finding the Fourth Proportional to 13,651.41, 20,477.13 and 3,790.71

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Solution

The fourth proportional to 13,651.41, 20,477.13 and 3,790.71 is: 5,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.41 : 20,477.13 = 3,790.71 : x
  2. Step 2: Convert to fraction form
    13,651.41/20,477.13 = 3,790.71/x
  3. Step 3: Cross multiply
    13,651.41x = 20,477.13 × 3,790.71
  4. Step 4: Simplify right side
    13,651.41x = 77,622,861.46
  5. Step 5: Solve for x
    x = 77,622,861.46/13,651.41
  6. Step 6: Final answer
    x = 5,686.07

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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.