Home / 13,670.87-20,514.38-5,772.87

Finding the Fourth Proportional to 13,670.87, 20,514.38 and 5,772.87

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Solution

The fourth proportional to 13,670.87, 20,514.38 and 5,772.87 is: 8,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.87 : 20,514.38 = 5,772.87 : x
  2. Step 2: Convert to fraction form
    13,670.87/20,514.38 = 5,772.87/x
  3. Step 3: Cross multiply
    13,670.87x = 20,514.38 × 5,772.87
  4. Step 4: Simplify right side
    13,670.87x = 118,426,848.87
  5. Step 5: Solve for x
    x = 118,426,848.87/13,670.87
  6. Step 6: Final answer
    x = 8,662.71

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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.