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Finding the Fourth Proportional to 18,365.85, 25,350.60 and 10,811.59

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Solution

The fourth proportional to 18,365.85, 25,350.60 and 10,811.59 is: 14,923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.85 : 25,350.60 = 10,811.59 : x
  2. Step 2: Convert to fraction form
    18,365.85/25,350.60 = 10,811.59/x
  3. Step 3: Cross multiply
    18,365.85x = 25,350.60 × 10,811.59
  4. Step 4: Simplify right side
    18,365.85x = 274,080,293.45
  5. Step 5: Solve for x
    x = 274,080,293.45/18,365.85
  6. Step 6: Final answer
    x = 14,923.37

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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.