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Finding the Fourth Proportional to 12,008.78, 17,990.67 and 7,063.64

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Solution

The fourth proportional to 12,008.78, 17,990.67 and 7,063.64 is: 10,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.78 : 17,990.67 = 7,063.64 : x
  2. Step 2: Convert to fraction form
    12,008.78/17,990.67 = 7,063.64/x
  3. Step 3: Cross multiply
    12,008.78x = 17,990.67 × 7,063.64
  4. Step 4: Simplify right side
    12,008.78x = 127,079,616.24
  5. Step 5: Solve for x
    x = 127,079,616.24/12,008.78
  6. Step 6: Final answer
    x = 10,582.23

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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.