Home / 12,108.24-18,137.16-7,703.88

Finding the Fourth Proportional to 12,108.24, 18,137.16 and 7,703.88

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Solution

The fourth proportional to 12,108.24, 18,137.16 and 7,703.88 is: 11,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.24 : 18,137.16 = 7,703.88 : x
  2. Step 2: Convert to fraction form
    12,108.24/18,137.16 = 7,703.88/x
  3. Step 3: Cross multiply
    12,108.24x = 18,137.16 × 7,703.88
  4. Step 4: Simplify right side
    12,108.24x = 139,726,504.18
  5. Step 5: Solve for x
    x = 139,726,504.18/12,108.24
  6. Step 6: Final answer
    x = 11,539.79

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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.