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Finding the Fourth Proportional to 16,911.70, 25,367.55 and 7,677.70

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Solution

The fourth proportional to 16,911.70, 25,367.55 and 7,677.70 is: 11,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,911.70 : 25,367.55 = 7,677.70 : x
  2. Step 2: Convert to fraction form
    16,911.70/25,367.55 = 7,677.70/x
  3. Step 3: Cross multiply
    16,911.70x = 25,367.55 × 7,677.70
  4. Step 4: Simplify right side
    16,911.70x = 194,764,438.64
  5. Step 5: Solve for x
    x = 194,764,438.64/16,911.70
  6. Step 6: Final answer
    x = 11,516.55

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1.5x scale

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.