Home / 19,690-27,172.74-11,307.04

Finding the Fourth Proportional to 19,690, 27,172.74 and 11,307.04

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Solution

The fourth proportional to 19,690, 27,172.74 and 11,307.04 is: 15,604.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690 : 27,172.74 = 11,307.04 : x
  2. Step 2: Convert to fraction form
    19,690/27,172.74 = 11,307.04/x
  3. Step 3: Cross multiply
    19,690x = 27,172.74 × 11,307.04
  4. Step 4: Simplify right side
    19,690x = 307,243,258.09
  5. Step 5: Solve for x
    x = 307,243,258.09/19,690
  6. Step 6: Final answer
    x = 15,604.03

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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.