Home / 28,145.85-42,205.14-11,499.27

Finding the Fourth Proportional to 28,145.85, 42,205.14 and 11,499.27

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Solution

The fourth proportional to 28,145.85, 42,205.14 and 11,499.27 is: 17,243.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.85 : 42,205.14 = 11,499.27 : x
  2. Step 2: Convert to fraction form
    28,145.85/42,205.14 = 11,499.27/x
  3. Step 3: Cross multiply
    28,145.85x = 42,205.14 × 11,499.27
  4. Step 4: Simplify right side
    28,145.85x = 485,328,300.25
  5. Step 5: Solve for x
    x = 485,328,300.25/28,145.85
  6. Step 6: Final answer
    x = 17,243.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.