Home / 14,415.83-21,480.44-12,843.75

Finding the Fourth Proportional to 14,415.83, 21,480.44 and 12,843.75

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Solution

The fourth proportional to 14,415.83, 21,480.44 and 12,843.75 is: 19,137.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.83 : 21,480.44 = 12,843.75 : x
  2. Step 2: Convert to fraction form
    14,415.83/21,480.44 = 12,843.75/x
  3. Step 3: Cross multiply
    14,415.83x = 21,480.44 × 12,843.75
  4. Step 4: Simplify right side
    14,415.83x = 275,889,337.03
  5. Step 5: Solve for x
    x = 275,889,337.03/14,415.83
  6. Step 6: Final answer
    x = 19,137.95

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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.