Home / 13,940.48-19,211.31-13,684.28

Finding the Fourth Proportional to 13,940.48, 19,211.31 and 13,684.28

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Solution

The fourth proportional to 13,940.48, 19,211.31 and 13,684.28 is: 18,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.48 : 19,211.31 = 13,684.28 : x
  2. Step 2: Convert to fraction form
    13,940.48/19,211.31 = 13,684.28/x
  3. Step 3: Cross multiply
    13,940.48x = 19,211.31 × 13,684.28
  4. Step 4: Simplify right side
    13,940.48x = 262,892,945.21
  5. Step 5: Solve for x
    x = 262,892,945.21/13,940.48
  6. Step 6: Final answer
    x = 18,858.24

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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.