Home / 12,165.15-18,239.62-4,372.95

Finding the Fourth Proportional to 12,165.15, 18,239.62 and 4,372.95

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Solution

The fourth proportional to 12,165.15, 18,239.62 and 4,372.95 is: 6,556.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.15 : 18,239.62 = 4,372.95 : x
  2. Step 2: Convert to fraction form
    12,165.15/18,239.62 = 4,372.95/x
  3. Step 3: Cross multiply
    12,165.15x = 18,239.62 × 4,372.95
  4. Step 4: Simplify right side
    12,165.15x = 79,760,833.22
  5. Step 5: Solve for x
    x = 79,760,833.22/12,165.15
  6. Step 6: Final answer
    x = 6,556.50

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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.