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Finding the Fourth Proportional to 18,804.54, 25,998.90 and 17,978.34

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Solution

The fourth proportional to 18,804.54, 25,998.90 and 17,978.34 is: 24,856.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.54 : 25,998.90 = 17,978.34 : x
  2. Step 2: Convert to fraction form
    18,804.54/25,998.90 = 17,978.34/x
  3. Step 3: Cross multiply
    18,804.54x = 25,998.90 × 17,978.34
  4. Step 4: Simplify right side
    18,804.54x = 467,417,063.83
  5. Step 5: Solve for x
    x = 467,417,063.83/18,804.54
  6. Step 6: Final answer
    x = 24,856.61

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1.5x scale

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.