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Finding the Fourth Proportional to 12,369.98, 17,064.63 and 8,119.34

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Solution

The fourth proportional to 12,369.98, 17,064.63 and 8,119.34 is: 11,200.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.98 : 17,064.63 = 8,119.34 : x
  2. Step 2: Convert to fraction form
    12,369.98/17,064.63 = 8,119.34/x
  3. Step 3: Cross multiply
    12,369.98x = 17,064.63 × 8,119.34
  4. Step 4: Simplify right side
    12,369.98x = 138,553,532.94
  5. Step 5: Solve for x
    x = 138,553,532.94/12,369.98
  6. Step 6: Final answer
    x = 11,200.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.