Home / 13,629.66-20,440.17-4,393.50

Finding the Fourth Proportional to 13,629.66, 20,440.17 and 4,393.50

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Solution

The fourth proportional to 13,629.66, 20,440.17 and 4,393.50 is: 6,588.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.66 : 20,440.17 = 4,393.50 : x
  2. Step 2: Convert to fraction form
    13,629.66/20,440.17 = 4,393.50/x
  3. Step 3: Cross multiply
    13,629.66x = 20,440.17 × 4,393.50
  4. Step 4: Simplify right side
    13,629.66x = 89,803,886.90
  5. Step 5: Solve for x
    x = 89,803,886.90/13,629.66
  6. Step 6: Final answer
    x = 6,588.86

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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.