Home / 13,745.74-18,973.68-9,778.36

Finding the Fourth Proportional to 13,745.74, 18,973.68 and 9,778.36

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Solution

The fourth proportional to 13,745.74, 18,973.68 and 9,778.36 is: 13,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.74 : 18,973.68 = 9,778.36 : x
  2. Step 2: Convert to fraction form
    13,745.74/18,973.68 = 9,778.36/x
  3. Step 3: Cross multiply
    13,745.74x = 18,973.68 × 9,778.36
  4. Step 4: Simplify right side
    13,745.74x = 185,531,473.56
  5. Step 5: Solve for x
    x = 185,531,473.56/13,745.74
  6. Step 6: Final answer
    x = 13,497.38

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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.