Home / 18,830.35-28,245.40-4,790.25

Finding the Fourth Proportional to 18,830.35, 28,245.40 and 4,790.25

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Solution

The fourth proportional to 18,830.35, 28,245.40 and 4,790.25 is: 7,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.35 : 28,245.40 = 4,790.25 : x
  2. Step 2: Convert to fraction form
    18,830.35/28,245.40 = 4,790.25/x
  3. Step 3: Cross multiply
    18,830.35x = 28,245.40 × 4,790.25
  4. Step 4: Simplify right side
    18,830.35x = 135,302,503.40
  5. Step 5: Solve for x
    x = 135,302,503.40/18,830.35
  6. Step 6: Final answer
    x = 7,185.34

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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.