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Finding the Fourth Proportional to 13,661.59, 20,495.10 and 4,303.97

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Solution

The fourth proportional to 13,661.59, 20,495.10 and 4,303.97 is: 6,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.59 : 20,495.10 = 4,303.97 : x
  2. Step 2: Convert to fraction form
    13,661.59/20,495.10 = 4,303.97/x
  3. Step 3: Cross multiply
    13,661.59x = 20,495.10 × 4,303.97
  4. Step 4: Simplify right side
    13,661.59x = 88,210,193.07
  5. Step 5: Solve for x
    x = 88,210,193.07/13,661.59
  6. Step 6: Final answer
    x = 6,456.81

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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.