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Finding the Fourth Proportional to 18,374.79, 25,352.78 and 11,658

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Solution

The fourth proportional to 18,374.79, 25,352.78 and 11,658 is: 16,085.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.79 : 25,352.78 = 11,658 : x
  2. Step 2: Convert to fraction form
    18,374.79/25,352.78 = 11,658/x
  3. Step 3: Cross multiply
    18,374.79x = 25,352.78 × 11,658
  4. Step 4: Simplify right side
    18,374.79x = 295,562,650.95
  5. Step 5: Solve for x
    x = 295,562,650.95/18,374.79
  6. Step 6: Final answer
    x = 16,085.23

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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.