Home / 28,195.07-42,299.13-8,205.03

Finding the Fourth Proportional to 28,195.07, 42,299.13 and 8,205.03

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Solution

The fourth proportional to 28,195.07, 42,299.13 and 8,205.03 is: 12,309.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.07 : 42,299.13 = 8,205.03 : x
  2. Step 2: Convert to fraction form
    28,195.07/42,299.13 = 8,205.03/x
  3. Step 3: Cross multiply
    28,195.07x = 42,299.13 × 8,205.03
  4. Step 4: Simplify right side
    28,195.07x = 347,065,615.24
  5. Step 5: Solve for x
    x = 347,065,615.24/28,195.07
  6. Step 6: Final answer
    x = 12,309.44

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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.