Home / 21,850.32-30,153.35-12,418.88

Finding the Fourth Proportional to 21,850.32, 30,153.35 and 12,418.88

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Solution

The fourth proportional to 21,850.32, 30,153.35 and 12,418.88 is: 17,137.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.32 : 30,153.35 = 12,418.88 : x
  2. Step 2: Convert to fraction form
    21,850.32/30,153.35 = 12,418.88/x
  3. Step 3: Cross multiply
    21,850.32x = 30,153.35 × 12,418.88
  4. Step 4: Simplify right side
    21,850.32x = 374,470,622.39
  5. Step 5: Solve for x
    x = 374,470,622.39/21,850.32
  6. Step 6: Final answer
    x = 17,137.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.