Home / 28,240.25-42,362.80-8,518.37

Finding the Fourth Proportional to 28,240.25, 42,362.80 and 8,518.37

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Solution

The fourth proportional to 28,240.25, 42,362.80 and 8,518.37 is: 12,778.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.25 : 42,362.80 = 8,518.37 : x
  2. Step 2: Convert to fraction form
    28,240.25/42,362.80 = 8,518.37/x
  3. Step 3: Cross multiply
    28,240.25x = 42,362.80 × 8,518.37
  4. Step 4: Simplify right side
    28,240.25x = 360,861,771.53
  5. Step 5: Solve for x
    x = 360,861,771.53/28,240.25
  6. Step 6: Final answer
    x = 12,778.28

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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.