Home / 12,440.34-18,661.31-4,120.02

Finding the Fourth Proportional to 12,440.34, 18,661.31 and 4,120.02

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Solution

The fourth proportional to 12,440.34, 18,661.31 and 4,120.02 is: 6,180.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.34 : 18,661.31 = 4,120.02 : x
  2. Step 2: Convert to fraction form
    12,440.34/18,661.31 = 4,120.02/x
  3. Step 3: Cross multiply
    12,440.34x = 18,661.31 × 4,120.02
  4. Step 4: Simplify right side
    12,440.34x = 76,884,970.43
  5. Step 5: Solve for x
    x = 76,884,970.43/12,440.34
  6. Step 6: Final answer
    x = 6,180.29

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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.