Home / 12,280.26-18,418.56-4,487.28

Finding the Fourth Proportional to 12,280.26, 18,418.56 and 4,487.28

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Solution

The fourth proportional to 12,280.26, 18,418.56 and 4,487.28 is: 6,730.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.26 : 18,418.56 = 4,487.28 : x
  2. Step 2: Convert to fraction form
    12,280.26/18,418.56 = 4,487.28/x
  3. Step 3: Cross multiply
    12,280.26x = 18,418.56 × 4,487.28
  4. Step 4: Simplify right side
    12,280.26x = 82,649,235.92
  5. Step 5: Solve for x
    x = 82,649,235.92/12,280.26
  6. Step 6: Final answer
    x = 6,730.25

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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.