Home / 13,940.67-19,211.55-13,684.48

Finding the Fourth Proportional to 13,940.67, 19,211.55 and 13,684.48

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Solution

The fourth proportional to 13,940.67, 19,211.55 and 13,684.48 is: 18,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.67 : 19,211.55 = 13,684.48 : x
  2. Step 2: Convert to fraction form
    13,940.67/19,211.55 = 13,684.48/x
  3. Step 3: Cross multiply
    13,940.67x = 19,211.55 × 13,684.48
  4. Step 4: Simplify right side
    13,940.67x = 262,900,071.74
  5. Step 5: Solve for x
    x = 262,900,071.74/13,940.67
  6. Step 6: Final answer
    x = 18,858.50

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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.