Home / 12,320.57-18,480.85-3,435.54

Finding the Fourth Proportional to 12,320.57, 18,480.85 and 3,435.54

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Solution

The fourth proportional to 12,320.57, 18,480.85 and 3,435.54 is: 5,153.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.57 : 18,480.85 = 3,435.54 : x
  2. Step 2: Convert to fraction form
    12,320.57/18,480.85 = 3,435.54/x
  3. Step 3: Cross multiply
    12,320.57x = 18,480.85 × 3,435.54
  4. Step 4: Simplify right side
    12,320.57x = 63,491,631.93
  5. Step 5: Solve for x
    x = 63,491,631.93/12,320.57
  6. Step 6: Final answer
    x = 5,153.31

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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.