Home / 21,881.90-30,197.14-12,450.46

Finding the Fourth Proportional to 21,881.90, 30,197.14 and 12,450.46

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Solution

The fourth proportional to 21,881.90, 30,197.14 and 12,450.46 is: 17,181.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.90 : 30,197.14 = 12,450.46 : x
  2. Step 2: Convert to fraction form
    21,881.90/30,197.14 = 12,450.46/x
  3. Step 3: Cross multiply
    21,881.90x = 30,197.14 × 12,450.46
  4. Step 4: Simplify right side
    21,881.90x = 375,968,283.68
  5. Step 5: Solve for x
    x = 375,968,283.68/21,881.90
  6. Step 6: Final answer
    x = 17,181.71

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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.