Home / 28,855.89-39,823.13-16,111.58

Finding the Fourth Proportional to 28,855.89, 39,823.13 and 16,111.58

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Solution

The fourth proportional to 28,855.89, 39,823.13 and 16,111.58 is: 22,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.89 : 39,823.13 = 16,111.58 : x
  2. Step 2: Convert to fraction form
    28,855.89/39,823.13 = 16,111.58/x
  3. Step 3: Cross multiply
    28,855.89x = 39,823.13 × 16,111.58
  4. Step 4: Simplify right side
    28,855.89x = 641,613,544.85
  5. Step 5: Solve for x
    x = 641,613,544.85/28,855.89
  6. Step 6: Final answer
    x = 22,235.10

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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.