Home / 28,855.47-39,820.67-16,108.43

Finding the Fourth Proportional to 28,855.47, 39,820.67 and 16,108.43

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Solution

The fourth proportional to 28,855.47, 39,820.67 and 16,108.43 is: 22,229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.47 : 39,820.67 = 16,108.43 : x
  2. Step 2: Convert to fraction form
    28,855.47/39,820.67 = 16,108.43/x
  3. Step 3: Cross multiply
    28,855.47x = 39,820.67 × 16,108.43
  4. Step 4: Simplify right side
    28,855.47x = 641,448,195.60
  5. Step 5: Solve for x
    x = 641,448,195.60/28,855.47
  6. Step 6: Final answer
    x = 22,229.69

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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.