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Finding the Fourth Proportional to 40,011.37, 60,020.17 and 11,929.28

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Solution

The fourth proportional to 40,011.37, 60,020.17 and 11,929.28 is: 17,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011.37 : 60,020.17 = 11,929.28 : x
  2. Step 2: Convert to fraction form
    40,011.37/60,020.17 = 11,929.28/x
  3. Step 3: Cross multiply
    40,011.37x = 60,020.17 × 11,929.28
  4. Step 4: Simplify right side
    40,011.37x = 715,997,083.65
  5. Step 5: Solve for x
    x = 715,997,083.65/40,011.37
  6. Step 6: Final answer
    x = 17,894.84

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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.