Home / 12,317.75-18,481.21-7,390.92

Finding the Fourth Proportional to 12,317.75, 18,481.21 and 7,390.92

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Solution

The fourth proportional to 12,317.75, 18,481.21 and 7,390.92 is: 11,089.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,317.75 : 18,481.21 = 7,390.92 : x
  2. Step 2: Convert to fraction form
    12,317.75/18,481.21 = 7,390.92/x
  3. Step 3: Cross multiply
    12,317.75x = 18,481.21 × 7,390.92
  4. Step 4: Simplify right side
    12,317.75x = 136,593,126.14
  5. Step 5: Solve for x
    x = 136,593,126.14/12,317.75
  6. Step 6: Final answer
    x = 11,089.13

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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.