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Finding the Fourth Proportional to 16,716.68, 25,063.16 and 8,390.69

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Solution

The fourth proportional to 16,716.68, 25,063.16 and 8,390.69 is: 12,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,716.68 : 25,063.16 = 8,390.69 : x
  2. Step 2: Convert to fraction form
    16,716.68/25,063.16 = 8,390.69/x
  3. Step 3: Cross multiply
    16,716.68x = 25,063.16 × 8,390.69
  4. Step 4: Simplify right side
    16,716.68x = 210,297,038.71
  5. Step 5: Solve for x
    x = 210,297,038.71/16,716.68
  6. Step 6: Final answer
    x = 12,580.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.