Home / 12,280.37-18,420.41-7,351.38

Finding the Fourth Proportional to 12,280.37, 18,420.41 and 7,351.38

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Solution

The fourth proportional to 12,280.37, 18,420.41 and 7,351.38 is: 11,026.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.37 : 18,420.41 = 7,351.38 : x
  2. Step 2: Convert to fraction form
    12,280.37/18,420.41 = 7,351.38/x
  3. Step 3: Cross multiply
    12,280.37x = 18,420.41 × 7,351.38
  4. Step 4: Simplify right side
    12,280.37x = 135,415,396.91
  5. Step 5: Solve for x
    x = 135,415,396.91/12,280.37
  6. Step 6: Final answer
    x = 11,026.98

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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.