Home / 13,783.20-20,662.50-6,377.47

Finding the Fourth Proportional to 13,783.20, 20,662.50 and 6,377.47

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Solution

The fourth proportional to 13,783.20, 20,662.50 and 6,377.47 is: 9,560.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.20 : 20,662.50 = 6,377.47 : x
  2. Step 2: Convert to fraction form
    13,783.20/20,662.50 = 6,377.47/x
  3. Step 3: Cross multiply
    13,783.20x = 20,662.50 × 6,377.47
  4. Step 4: Simplify right side
    13,783.20x = 131,774,473.88
  5. Step 5: Solve for x
    x = 131,774,473.88/13,783.20
  6. Step 6: Final answer
    x = 9,560.51

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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.