Home / 12,989.62-19,485.97-4,668.94

Finding the Fourth Proportional to 12,989.62, 19,485.97 and 4,668.94

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Solution

The fourth proportional to 12,989.62, 19,485.97 and 4,668.94 is: 7,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.62 : 19,485.97 = 4,668.94 : x
  2. Step 2: Convert to fraction form
    12,989.62/19,485.97 = 4,668.94/x
  3. Step 3: Cross multiply
    12,989.62x = 19,485.97 × 4,668.94
  4. Step 4: Simplify right side
    12,989.62x = 90,978,837.46
  5. Step 5: Solve for x
    x = 90,978,837.46/12,989.62
  6. Step 6: Final answer
    x = 7,003.97

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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.