Home / 12,865.20-19,296.50-8,731.77

Finding the Fourth Proportional to 12,865.20, 19,296.50 and 8,731.77

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Solution

The fourth proportional to 12,865.20, 19,296.50 and 8,731.77 is: 13,096.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.20 : 19,296.50 = 8,731.77 : x
  2. Step 2: Convert to fraction form
    12,865.20/19,296.50 = 8,731.77/x
  3. Step 3: Cross multiply
    12,865.20x = 19,296.50 × 8,731.77
  4. Step 4: Simplify right side
    12,865.20x = 168,492,556.15
  5. Step 5: Solve for x
    x = 168,492,556.15/12,865.20
  6. Step 6: Final answer
    x = 13,096.77

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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.