Home / 12,656.22-18,982.66-3,890.40

Finding the Fourth Proportional to 12,656.22, 18,982.66 and 3,890.40

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Solution

The fourth proportional to 12,656.22, 18,982.66 and 3,890.40 is: 5,835.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.22 : 18,982.66 = 3,890.40 : x
  2. Step 2: Convert to fraction form
    12,656.22/18,982.66 = 3,890.40/x
  3. Step 3: Cross multiply
    12,656.22x = 18,982.66 × 3,890.40
  4. Step 4: Simplify right side
    12,656.22x = 73,850,140.46
  5. Step 5: Solve for x
    x = 73,850,140.46/12,656.22
  6. Step 6: Final answer
    x = 5,835.09

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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.