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Finding the Fourth Proportional to 18,376.98, 25,360.79 and 10,419.54

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Solution

The fourth proportional to 18,376.98, 25,360.79 and 10,419.54 is: 14,379.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.98 : 25,360.79 = 10,419.54 : x
  2. Step 2: Convert to fraction form
    18,376.98/25,360.79 = 10,419.54/x
  3. Step 3: Cross multiply
    18,376.98x = 25,360.79 × 10,419.54
  4. Step 4: Simplify right side
    18,376.98x = 264,247,765.84
  5. Step 5: Solve for x
    x = 264,247,765.84/18,376.98
  6. Step 6: Final answer
    x = 14,379.28

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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.