Home / 30,743.37-46,126.31-12,978.45

Finding the Fourth Proportional to 30,743.37, 46,126.31 and 12,978.45

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Solution

The fourth proportional to 30,743.37, 46,126.31 and 12,978.45 is: 19,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,743.37 : 46,126.31 = 12,978.45 : x
  2. Step 2: Convert to fraction form
    30,743.37/46,126.31 = 12,978.45/x
  3. Step 3: Cross multiply
    30,743.37x = 46,126.31 × 12,978.45
  4. Step 4: Simplify right side
    30,743.37x = 598,647,943.13
  5. Step 5: Solve for x
    x = 598,647,943.13/30,743.37
  6. Step 6: Final answer
    x = 19,472.42

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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.