Home / 28,868.59-39,840.42-16,121.76

Finding the Fourth Proportional to 28,868.59, 39,840.42 and 16,121.76

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Solution

The fourth proportional to 28,868.59, 39,840.42 and 16,121.76 is: 22,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,868.59 : 39,840.42 = 16,121.76 : x
  2. Step 2: Convert to fraction form
    28,868.59/39,840.42 = 16,121.76/x
  3. Step 3: Cross multiply
    28,868.59x = 39,840.42 × 16,121.76
  4. Step 4: Simplify right side
    28,868.59x = 642,297,689.54
  5. Step 5: Solve for x
    x = 642,297,689.54/28,868.59
  6. Step 6: Final answer
    x = 22,249.01

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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.