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Finding the Fourth Proportional to 22,460.63, 30,995.87 and 12,388.79

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Solution

The fourth proportional to 22,460.63, 30,995.87 and 12,388.79 is: 17,096.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,460.63 : 30,995.87 = 12,388.79 : x
  2. Step 2: Convert to fraction form
    22,460.63/30,995.87 = 12,388.79/x
  3. Step 3: Cross multiply
    22,460.63x = 30,995.87 × 12,388.79
  4. Step 4: Simplify right side
    22,460.63x = 384,001,339.84
  5. Step 5: Solve for x
    x = 384,001,339.84/22,460.63
  6. Step 6: Final answer
    x = 17,096.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.