Home / 21,850.63-30,152.91-12,290.34

Finding the Fourth Proportional to 21,850.63, 30,152.91 and 12,290.34

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Solution

The fourth proportional to 21,850.63, 30,152.91 and 12,290.34 is: 16,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.63 : 30,152.91 = 12,290.34 : x
  2. Step 2: Convert to fraction form
    21,850.63/30,152.91 = 12,290.34/x
  3. Step 3: Cross multiply
    21,850.63x = 30,152.91 × 12,290.34
  4. Step 4: Simplify right side
    21,850.63x = 370,589,675.05
  5. Step 5: Solve for x
    x = 370,589,675.05/21,850.63
  6. Step 6: Final answer
    x = 16,960.14

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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.