Home / 12,435.72-18,640.44-4,113.60

Finding the Fourth Proportional to 12,435.72, 18,640.44 and 4,113.60

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Solution

The fourth proportional to 12,435.72, 18,640.44 and 4,113.60 is: 6,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.72 : 18,640.44 = 4,113.60 : x
  2. Step 2: Convert to fraction form
    12,435.72/18,640.44 = 4,113.60/x
  3. Step 3: Cross multiply
    12,435.72x = 18,640.44 × 4,113.60
  4. Step 4: Simplify right side
    12,435.72x = 76,679,313.98
  5. Step 5: Solve for x
    x = 76,679,313.98/12,435.72
  6. Step 6: Final answer
    x = 6,166.05

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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.