Home / 19,560.78-26,976.51-15,361.74

Finding the Fourth Proportional to 19,560.78, 26,976.51 and 15,361.74

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Solution

The fourth proportional to 19,560.78, 26,976.51 and 15,361.74 is: 21,185.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,560.78 : 26,976.51 = 15,361.74 : x
  2. Step 2: Convert to fraction form
    19,560.78/26,976.51 = 15,361.74/x
  3. Step 3: Cross multiply
    19,560.78x = 26,976.51 × 15,361.74
  4. Step 4: Simplify right side
    19,560.78x = 414,406,132.73
  5. Step 5: Solve for x
    x = 414,406,132.73/19,560.78
  6. Step 6: Final answer
    x = 21,185.56

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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.