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Finding the Fourth Proportional to 34,578.87, 51,873.03 and 12,398.37

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Solution

The fourth proportional to 34,578.87, 51,873.03 and 12,398.37 is: 18,599.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,578.87 : 51,873.03 = 12,398.37 : x
  2. Step 2: Convert to fraction form
    34,578.87/51,873.03 = 12,398.37/x
  3. Step 3: Cross multiply
    34,578.87x = 51,873.03 × 12,398.37
  4. Step 4: Simplify right side
    34,578.87x = 643,141,018.96
  5. Step 5: Solve for x
    x = 643,141,018.96/34,578.87
  6. Step 6: Final answer
    x = 18,599.25

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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.