Home / 12,280.95-18,408.83-4,782.51

Finding the Fourth Proportional to 12,280.95, 18,408.83 and 4,782.51

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Solution

The fourth proportional to 12,280.95, 18,408.83 and 4,782.51 is: 7,168.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.95 : 18,408.83 = 4,782.51 : x
  2. Step 2: Convert to fraction form
    12,280.95/18,408.83 = 4,782.51/x
  3. Step 3: Cross multiply
    12,280.95x = 18,408.83 × 4,782.51
  4. Step 4: Simplify right side
    12,280.95x = 88,040,389.65
  5. Step 5: Solve for x
    x = 88,040,389.65/12,280.95
  6. Step 6: Final answer
    x = 7,168.86

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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.