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Finding the Fourth Proportional to 12,967.68, 17,901.36 and 8,491.62

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Solution

The fourth proportional to 12,967.68, 17,901.36 and 8,491.62 is: 11,722.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,967.68 : 17,901.36 = 8,491.62 : x
  2. Step 2: Convert to fraction form
    12,967.68/17,901.36 = 8,491.62/x
  3. Step 3: Cross multiply
    12,967.68x = 17,901.36 × 8,491.62
  4. Step 4: Simplify right side
    12,967.68x = 152,011,546.60
  5. Step 5: Solve for x
    x = 152,011,546.60/12,967.68
  6. Step 6: Final answer
    x = 11,722.34

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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.