Home / 18,817.25-28,225.89-4,778.33

Finding the Fourth Proportional to 18,817.25, 28,225.89 and 4,778.33

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Solution

The fourth proportional to 18,817.25, 28,225.89 and 4,778.33 is: 7,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.25 : 28,225.89 = 4,778.33 : x
  2. Step 2: Convert to fraction form
    18,817.25/28,225.89 = 4,778.33/x
  3. Step 3: Cross multiply
    18,817.25x = 28,225.89 × 4,778.33
  4. Step 4: Simplify right side
    18,817.25x = 134,872,605.02
  5. Step 5: Solve for x
    x = 134,872,605.02/18,817.25
  6. Step 6: Final answer
    x = 7,167.50

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Similar ratio
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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.