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Finding the Fourth Proportional to 14,294.88, 21,439.08 and 3,905.28

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Solution

The fourth proportional to 14,294.88, 21,439.08 and 3,905.28 is: 5,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,294.88 : 21,439.08 = 3,905.28 : x
  2. Step 2: Convert to fraction form
    14,294.88/21,439.08 = 3,905.28/x
  3. Step 3: Cross multiply
    14,294.88x = 21,439.08 × 3,905.28
  4. Step 4: Simplify right side
    14,294.88x = 83,725,610.34
  5. Step 5: Solve for x
    x = 83,725,610.34/14,294.88
  6. Step 6: Final answer
    x = 5,857.03

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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.