Home / 28,857.84-39,816.60-16,111.08

Finding the Fourth Proportional to 28,857.84, 39,816.60 and 16,111.08

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Solution

The fourth proportional to 28,857.84, 39,816.60 and 16,111.08 is: 22,229.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.84 : 39,816.60 = 16,111.08 : x
  2. Step 2: Convert to fraction form
    28,857.84/39,816.60 = 16,111.08/x
  3. Step 3: Cross multiply
    28,857.84x = 39,816.60 × 16,111.08
  4. Step 4: Simplify right side
    28,857.84x = 641,488,427.93
  5. Step 5: Solve for x
    x = 641,488,427.93/28,857.84
  6. Step 6: Final answer
    x = 22,229.26

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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.