Home / 11,985.13-17,977.68-3,220.04

Finding the Fourth Proportional to 11,985.13, 17,977.68 and 3,220.04

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Solution

The fourth proportional to 11,985.13, 17,977.68 and 3,220.04 is: 4,830.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.13 : 17,977.68 = 3,220.04 : x
  2. Step 2: Convert to fraction form
    11,985.13/17,977.68 = 3,220.04/x
  3. Step 3: Cross multiply
    11,985.13x = 17,977.68 × 3,220.04
  4. Step 4: Simplify right side
    11,985.13x = 57,888,854.79
  5. Step 5: Solve for x
    x = 57,888,854.79/11,985.13
  6. Step 6: Final answer
    x = 4,830.06

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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.