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Finding the Fourth Proportional to 12,392.88, 17,102.44 and 6,803.88

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Solution

The fourth proportional to 12,392.88, 17,102.44 and 6,803.88 is: 9,389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.88 : 17,102.44 = 6,803.88 : x
  2. Step 2: Convert to fraction form
    12,392.88/17,102.44 = 6,803.88/x
  3. Step 3: Cross multiply
    12,392.88x = 17,102.44 × 6,803.88
  4. Step 4: Simplify right side
    12,392.88x = 116,362,863.96
  5. Step 5: Solve for x
    x = 116,362,863.96/12,392.88
  6. Step 6: Final answer
    x = 9,389.50

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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.