Home / 13,817.78-20,729.63-4,458.33

Finding the Fourth Proportional to 13,817.78, 20,729.63 and 4,458.33

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Solution

The fourth proportional to 13,817.78, 20,729.63 and 4,458.33 is: 6,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.78 : 20,729.63 = 4,458.33 : x
  2. Step 2: Convert to fraction form
    13,817.78/20,729.63 = 4,458.33/x
  3. Step 3: Cross multiply
    13,817.78x = 20,729.63 × 4,458.33
  4. Step 4: Simplify right side
    13,817.78x = 92,419,542.46
  5. Step 5: Solve for x
    x = 92,419,542.46/13,817.78
  6. Step 6: Final answer
    x = 6,688.45

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1.5x scale

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.