Home / 11,620.60-17,420.34-4,690.36

Finding the Fourth Proportional to 11,620.60, 17,420.34 and 4,690.36

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Solution

The fourth proportional to 11,620.60, 17,420.34 and 4,690.36 is: 7,031.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.60 : 17,420.34 = 4,690.36 : x
  2. Step 2: Convert to fraction form
    11,620.60/17,420.34 = 4,690.36/x
  3. Step 3: Cross multiply
    11,620.60x = 17,420.34 × 4,690.36
  4. Step 4: Simplify right side
    11,620.60x = 81,707,665.92
  5. Step 5: Solve for x
    x = 81,707,665.92/11,620.60
  6. Step 6: Final answer
    x = 7,031.28

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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.