Home / 28,855.37-39,821.09-18,100.70

Finding the Fourth Proportional to 28,855.37, 39,821.09 and 18,100.70

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Solution

The fourth proportional to 28,855.37, 39,821.09 and 18,100.70 is: 24,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.37 : 39,821.09 = 18,100.70 : x
  2. Step 2: Convert to fraction form
    28,855.37/39,821.09 = 18,100.70/x
  3. Step 3: Cross multiply
    28,855.37x = 39,821.09 × 18,100.70
  4. Step 4: Simplify right side
    28,855.37x = 720,789,612.81
  5. Step 5: Solve for x
    x = 720,789,612.81/28,855.37
  6. Step 6: Final answer
    x = 24,979.39

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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.