Home / 13,361.64-18,438.96-7,986.52

Finding the Fourth Proportional to 13,361.64, 18,438.96 and 7,986.52

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Solution

The fourth proportional to 13,361.64, 18,438.96 and 7,986.52 is: 11,021.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.64 : 18,438.96 = 7,986.52 : x
  2. Step 2: Convert to fraction form
    13,361.64/18,438.96 = 7,986.52/x
  3. Step 3: Cross multiply
    13,361.64x = 18,438.96 × 7,986.52
  4. Step 4: Simplify right side
    13,361.64x = 147,263,122.82
  5. Step 5: Solve for x
    x = 147,263,122.82/13,361.64
  6. Step 6: Final answer
    x = 11,021.34

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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.