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Finding the Fourth Proportional to 12,579.03, 18,875.97 and 4,687.20

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Solution

The fourth proportional to 12,579.03, 18,875.97 and 4,687.20 is: 7,033.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.03 : 18,875.97 = 4,687.20 : x
  2. Step 2: Convert to fraction form
    12,579.03/18,875.97 = 4,687.20/x
  3. Step 3: Cross multiply
    12,579.03x = 18,875.97 × 4,687.20
  4. Step 4: Simplify right side
    12,579.03x = 88,475,446.58
  5. Step 5: Solve for x
    x = 88,475,446.58/12,579.03
  6. Step 6: Final answer
    x = 7,033.57

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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.