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Finding the Fourth Proportional to 14,452, 21,681.36 and 7,429.36

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Solution

The fourth proportional to 14,452, 21,681.36 and 7,429.36 is: 11,145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,452 : 21,681.36 = 7,429.36 : x
  2. Step 2: Convert to fraction form
    14,452/21,681.36 = 7,429.36/x
  3. Step 3: Cross multiply
    14,452x = 21,681.36 × 7,429.36
  4. Step 4: Simplify right side
    14,452x = 161,078,628.73
  5. Step 5: Solve for x
    x = 161,078,628.73/14,452
  6. Step 6: Final answer
    x = 11,145.77

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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.