Home / 14,415.33-21,479.69-12,843.25

Finding the Fourth Proportional to 14,415.33, 21,479.69 and 12,843.25

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Solution

The fourth proportional to 14,415.33, 21,479.69 and 12,843.25 is: 19,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.33 : 21,479.69 = 12,843.25 : x
  2. Step 2: Convert to fraction form
    14,415.33/21,479.69 = 12,843.25/x
  3. Step 3: Cross multiply
    14,415.33x = 21,479.69 × 12,843.25
  4. Step 4: Simplify right side
    14,415.33x = 275,869,028.59
  5. Step 5: Solve for x
    x = 275,869,028.59/14,415.33
  6. Step 6: Final answer
    x = 19,137.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.