Home / 12,005.05-18,007.58-3,239.95

Finding the Fourth Proportional to 12,005.05, 18,007.58 and 3,239.95

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Solution

The fourth proportional to 12,005.05, 18,007.58 and 3,239.95 is: 4,859.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.05 : 18,007.58 = 3,239.95 : x
  2. Step 2: Convert to fraction form
    12,005.05/18,007.58 = 3,239.95/x
  3. Step 3: Cross multiply
    12,005.05x = 18,007.58 × 3,239.95
  4. Step 4: Simplify right side
    12,005.05x = 58,343,658.82
  5. Step 5: Solve for x
    x = 58,343,658.82/12,005.05
  6. Step 6: Final answer
    x = 4,859.93

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Similar ratio
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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.