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Finding the Fourth Proportional to 12,800.32, 19,203.06 and 5,009

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Solution

The fourth proportional to 12,800.32, 19,203.06 and 5,009 is: 7,514.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.32 : 19,203.06 = 5,009 : x
  2. Step 2: Convert to fraction form
    12,800.32/19,203.06 = 5,009/x
  3. Step 3: Cross multiply
    12,800.32x = 19,203.06 × 5,009
  4. Step 4: Simplify right side
    12,800.32x = 96,188,127.54
  5. Step 5: Solve for x
    x = 96,188,127.54/12,800.32
  6. Step 6: Final answer
    x = 7,514.51

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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.