Home / 13,539.20-20,306.70-4,772.06

Finding the Fourth Proportional to 13,539.20, 20,306.70 and 4,772.06

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Solution

The fourth proportional to 13,539.20, 20,306.70 and 4,772.06 is: 7,157.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.20 : 20,306.70 = 4,772.06 : x
  2. Step 2: Convert to fraction form
    13,539.20/20,306.70 = 4,772.06/x
  3. Step 3: Cross multiply
    13,539.20x = 20,306.70 × 4,772.06
  4. Step 4: Simplify right side
    13,539.20x = 96,904,879.64
  5. Step 5: Solve for x
    x = 96,904,879.64/13,539.20
  6. Step 6: Final answer
    x = 7,157.36

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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.