Home / 12,172.22-18,258.35-2,938.22

Finding the Fourth Proportional to 12,172.22, 18,258.35 and 2,938.22

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Solution

The fourth proportional to 12,172.22, 18,258.35 and 2,938.22 is: 4,407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.22 : 18,258.35 = 2,938.22 : x
  2. Step 2: Convert to fraction form
    12,172.22/18,258.35 = 2,938.22/x
  3. Step 3: Cross multiply
    12,172.22x = 18,258.35 × 2,938.22
  4. Step 4: Simplify right side
    12,172.22x = 53,646,943.15
  5. Step 5: Solve for x
    x = 53,646,943.15/12,172.22
  6. Step 6: Final answer
    x = 4,407.33

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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.