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Finding the Fourth Proportional to 12,393.59, 17,103.18 and 6,728.36

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Solution

The fourth proportional to 12,393.59, 17,103.18 and 6,728.36 is: 9,285.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.59 : 17,103.18 = 6,728.36 : x
  2. Step 2: Convert to fraction form
    12,393.59/17,103.18 = 6,728.36/x
  3. Step 3: Cross multiply
    12,393.59x = 17,103.18 × 6,728.36
  4. Step 4: Simplify right side
    12,393.59x = 115,076,266.67
  5. Step 5: Solve for x
    x = 115,076,266.67/12,393.59
  6. Step 6: Final answer
    x = 9,285.15

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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.