Home / 28,868.68-39,836.51-16,120.87

Finding the Fourth Proportional to 28,868.68, 39,836.51 and 16,120.87

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Solution

The fourth proportional to 28,868.68, 39,836.51 and 16,120.87 is: 22,245.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,868.68 : 39,836.51 = 16,120.87 : x
  2. Step 2: Convert to fraction form
    28,868.68/39,836.51 = 16,120.87/x
  3. Step 3: Cross multiply
    28,868.68x = 39,836.51 × 16,120.87
  4. Step 4: Simplify right side
    28,868.68x = 642,198,919.18
  5. Step 5: Solve for x
    x = 642,198,919.18/28,868.68
  6. Step 6: Final answer
    x = 22,245.52

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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.