Home / 12,435.90-18,653.91-3,551.19

Finding the Fourth Proportional to 12,435.90, 18,653.91 and 3,551.19

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Solution

The fourth proportional to 12,435.90, 18,653.91 and 3,551.19 is: 5,326.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.90 : 18,653.91 = 3,551.19 : x
  2. Step 2: Convert to fraction form
    12,435.90/18,653.91 = 3,551.19/x
  3. Step 3: Cross multiply
    12,435.90x = 18,653.91 × 3,551.19
  4. Step 4: Simplify right side
    12,435.90x = 66,243,578.65
  5. Step 5: Solve for x
    x = 66,243,578.65/12,435.90
  6. Step 6: Final answer
    x = 5,326.80

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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.