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Finding the Fourth Proportional to 12,253.76, 16,910.32 and 6,664.80

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Solution

The fourth proportional to 12,253.76, 16,910.32 and 6,664.80 is: 9,197.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253.76 : 16,910.32 = 6,664.80 : x
  2. Step 2: Convert to fraction form
    12,253.76/16,910.32 = 6,664.80/x
  3. Step 3: Cross multiply
    12,253.76x = 16,910.32 × 6,664.80
  4. Step 4: Simplify right side
    12,253.76x = 112,703,900.74
  5. Step 5: Solve for x
    x = 112,703,900.74/12,253.76
  6. Step 6: Final answer
    x = 9,197.50

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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.