Home / 12,214.11-18,350.34-7,840.11

Finding the Fourth Proportional to 12,214.11, 18,350.34 and 7,840.11

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Solution

The fourth proportional to 12,214.11, 18,350.34 and 7,840.11 is: 11,778.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.11 : 18,350.34 = 7,840.11 : x
  2. Step 2: Convert to fraction form
    12,214.11/18,350.34 = 7,840.11/x
  3. Step 3: Cross multiply
    12,214.11x = 18,350.34 × 7,840.11
  4. Step 4: Simplify right side
    12,214.11x = 143,868,684.14
  5. Step 5: Solve for x
    x = 143,868,684.14/12,214.11
  6. Step 6: Final answer
    x = 11,778.89

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1.5x scale

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.