Home / 12,015.41-18,023.20-7,881.68

Finding the Fourth Proportional to 12,015.41, 18,023.20 and 7,881.68

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Solution

The fourth proportional to 12,015.41, 18,023.20 and 7,881.68 is: 11,822.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.41 : 18,023.20 = 7,881.68 : x
  2. Step 2: Convert to fraction form
    12,015.41/18,023.20 = 7,881.68/x
  3. Step 3: Cross multiply
    12,015.41x = 18,023.20 × 7,881.68
  4. Step 4: Simplify right side
    12,015.41x = 142,053,120.33
  5. Step 5: Solve for x
    x = 142,053,120.33/12,015.41
  6. Step 6: Final answer
    x = 11,822.58

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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.