Home / 13,277.70-18,321.11-7,611.36

Finding the Fourth Proportional to 13,277.70, 18,321.11 and 7,611.36

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Solution

The fourth proportional to 13,277.70, 18,321.11 and 7,611.36 is: 10,502.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,277.70 : 18,321.11 = 7,611.36 : x
  2. Step 2: Convert to fraction form
    13,277.70/18,321.11 = 7,611.36/x
  3. Step 3: Cross multiply
    13,277.70x = 18,321.11 × 7,611.36
  4. Step 4: Simplify right side
    13,277.70x = 139,448,525.75
  5. Step 5: Solve for x
    x = 139,448,525.75/13,277.70
  6. Step 6: Final answer
    x = 10,502.46

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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.