Home / 11,985.20-17,977.88-3,665.36

Finding the Fourth Proportional to 11,985.20, 17,977.88 and 3,665.36

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Solution

The fourth proportional to 11,985.20, 17,977.88 and 3,665.36 is: 5,498.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.20 : 17,977.88 = 3,665.36 : x
  2. Step 2: Convert to fraction form
    11,985.20/17,977.88 = 3,665.36/x
  3. Step 3: Cross multiply
    11,985.20x = 17,977.88 × 3,665.36
  4. Step 4: Simplify right side
    11,985.20x = 65,895,312.35
  5. Step 5: Solve for x
    x = 65,895,312.35/11,985.20
  6. Step 6: Final answer
    x = 5,498.06

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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.