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Finding the Fourth Proportional to 28,025, 38,673.54 and 15,449

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Solution

The fourth proportional to 28,025, 38,673.54 and 15,449 is: 21,319.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025 : 38,673.54 = 15,449 : x
  2. Step 2: Convert to fraction form
    28,025/38,673.54 = 15,449/x
  3. Step 3: Cross multiply
    28,025x = 38,673.54 × 15,449
  4. Step 4: Simplify right side
    28,025x = 597,467,519.46
  5. Step 5: Solve for x
    x = 597,467,519.46/28,025
  6. Step 6: Final answer
    x = 21,319.09

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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.