Home / 28,544.94-39,378.62-18,989.51

Finding the Fourth Proportional to 28,544.94, 39,378.62 and 18,989.51

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Solution

The fourth proportional to 28,544.94, 39,378.62 and 18,989.51 is: 26,196.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.94 : 39,378.62 = 18,989.51 : x
  2. Step 2: Convert to fraction form
    28,544.94/39,378.62 = 18,989.51/x
  3. Step 3: Cross multiply
    28,544.94x = 39,378.62 × 18,989.51
  4. Step 4: Simplify right side
    28,544.94x = 747,780,548.86
  5. Step 5: Solve for x
    x = 747,780,548.86/28,544.94
  6. Step 6: Final answer
    x = 26,196.61

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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.