Home / 13,563.56-20,345.20-3,702.87

Finding the Fourth Proportional to 13,563.56, 20,345.20 and 3,702.87

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Solution

The fourth proportional to 13,563.56, 20,345.20 and 3,702.87 is: 5,554.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.56 : 20,345.20 = 3,702.87 : x
  2. Step 2: Convert to fraction form
    13,563.56/20,345.20 = 3,702.87/x
  3. Step 3: Cross multiply
    13,563.56x = 20,345.20 × 3,702.87
  4. Step 4: Simplify right side
    13,563.56x = 75,335,621.47
  5. Step 5: Solve for x
    x = 75,335,621.47/13,563.56
  6. Step 6: Final answer
    x = 5,554.27

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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.