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Finding the Fourth Proportional to 14,131.69, 21,192.64 and 7,108.99

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Solution

The fourth proportional to 14,131.69, 21,192.64 and 7,108.99 is: 10,661.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,131.69 : 21,192.64 = 7,108.99 : x
  2. Step 2: Convert to fraction form
    14,131.69/21,192.64 = 7,108.99/x
  3. Step 3: Cross multiply
    14,131.69x = 21,192.64 × 7,108.99
  4. Step 4: Simplify right side
    14,131.69x = 150,658,265.83
  5. Step 5: Solve for x
    x = 150,658,265.83/14,131.69
  6. Step 6: Final answer
    x = 10,661.02

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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.