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Finding the Fourth Proportional to 13,762.02, 20,640.18 and 8,694.68

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Solution

The fourth proportional to 13,762.02, 20,640.18 and 8,694.68 is: 13,040.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762.02 : 20,640.18 = 8,694.68 : x
  2. Step 2: Convert to fraction form
    13,762.02/20,640.18 = 8,694.68/x
  3. Step 3: Cross multiply
    13,762.02x = 20,640.18 × 8,694.68
  4. Step 4: Simplify right side
    13,762.02x = 179,459,760.24
  5. Step 5: Solve for x
    x = 179,459,760.24/13,762.02
  6. Step 6: Final answer
    x = 13,040.22

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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.