Home / 21,894.47-30,215.90-12,204.54

Finding the Fourth Proportional to 21,894.47, 30,215.90 and 12,204.54

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Solution

The fourth proportional to 21,894.47, 30,215.90 and 12,204.54 is: 16,843.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,894.47 : 30,215.90 = 12,204.54 : x
  2. Step 2: Convert to fraction form
    21,894.47/30,215.90 = 12,204.54/x
  3. Step 3: Cross multiply
    21,894.47x = 30,215.90 × 12,204.54
  4. Step 4: Simplify right side
    21,894.47x = 368,771,190.70
  5. Step 5: Solve for x
    x = 368,771,190.70/21,894.47
  6. Step 6: Final answer
    x = 16,843.12

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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.