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Finding the Fourth Proportional to 12,393.14, 17,104.84 and 7,087.91

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Solution

The fourth proportional to 12,393.14, 17,104.84 and 7,087.91 is: 9,782.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.14 : 17,104.84 = 7,087.91 : x
  2. Step 2: Convert to fraction form
    12,393.14/17,104.84 = 7,087.91/x
  3. Step 3: Cross multiply
    12,393.14x = 17,104.84 × 7,087.91
  4. Step 4: Simplify right side
    12,393.14x = 121,237,463.24
  5. Step 5: Solve for x
    x = 121,237,463.24/12,393.14
  6. Step 6: Final answer
    x = 9,782.63

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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.