Home / 14,185.50-21,297.09-12,118.78

Finding the Fourth Proportional to 14,185.50, 21,297.09 and 12,118.78

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Solution

The fourth proportional to 14,185.50, 21,297.09 and 12,118.78 is: 18,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,185.50 : 21,297.09 = 12,118.78 : x
  2. Step 2: Convert to fraction form
    14,185.50/21,297.09 = 12,118.78/x
  3. Step 3: Cross multiply
    14,185.50x = 21,297.09 × 12,118.78
  4. Step 4: Simplify right side
    14,185.50x = 258,094,748.35
  5. Step 5: Solve for x
    x = 258,094,748.35/14,185.50
  6. Step 6: Final answer
    x = 18,194.27

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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.