Home / 28,355.94-39,109.23-18,286.02

Finding the Fourth Proportional to 28,355.94, 39,109.23 and 18,286.02

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Solution

The fourth proportional to 28,355.94, 39,109.23 and 18,286.02 is: 25,220.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.94 : 39,109.23 = 18,286.02 : x
  2. Step 2: Convert to fraction form
    28,355.94/39,109.23 = 18,286.02/x
  3. Step 3: Cross multiply
    28,355.94x = 39,109.23 × 18,286.02
  4. Step 4: Simplify right side
    28,355.94x = 715,152,161.96
  5. Step 5: Solve for x
    x = 715,152,161.96/28,355.94
  6. Step 6: Final answer
    x = 25,220.54

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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.