Home / 18,485.15-25,528.14-11,773.78

Finding the Fourth Proportional to 18,485.15, 25,528.14 and 11,773.78

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Solution

The fourth proportional to 18,485.15, 25,528.14 and 11,773.78 is: 16,259.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.15 : 25,528.14 = 11,773.78 : x
  2. Step 2: Convert to fraction form
    18,485.15/25,528.14 = 11,773.78/x
  3. Step 3: Cross multiply
    18,485.15x = 25,528.14 × 11,773.78
  4. Step 4: Simplify right side
    18,485.15x = 300,562,640.35
  5. Step 5: Solve for x
    x = 300,562,640.35/18,485.15
  6. Step 6: Final answer
    x = 16,259.69

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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.