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Finding the Fourth Proportional to 15,682.80, 23,509.12 and 5,819.36

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Solution

The fourth proportional to 15,682.80, 23,509.12 and 5,819.36 is: 8,723.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,682.80 : 23,509.12 = 5,819.36 : x
  2. Step 2: Convert to fraction form
    15,682.80/23,509.12 = 5,819.36/x
  3. Step 3: Cross multiply
    15,682.80x = 23,509.12 × 5,819.36
  4. Step 4: Simplify right side
    15,682.80x = 136,808,032.56
  5. Step 5: Solve for x
    x = 136,808,032.56/15,682.80
  6. Step 6: Final answer
    x = 8,723.44

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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.