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Finding the Fourth Proportional to 14,459.92, 19,954.84 and 8,491.66

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Solution

The fourth proportional to 14,459.92, 19,954.84 and 8,491.66 is: 11,718.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,459.92 : 19,954.84 = 8,491.66 : x
  2. Step 2: Convert to fraction form
    14,459.92/19,954.84 = 8,491.66/x
  3. Step 3: Cross multiply
    14,459.92x = 19,954.84 × 8,491.66
  4. Step 4: Simplify right side
    14,459.92x = 169,449,716.63
  5. Step 5: Solve for x
    x = 169,449,716.63/14,459.92
  6. Step 6: Final answer
    x = 11,718.58

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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.