Home / 13,321.51-18,372.40-8,015.34

Finding the Fourth Proportional to 13,321.51, 18,372.40 and 8,015.34

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Solution

The fourth proportional to 13,321.51, 18,372.40 and 8,015.34 is: 11,054.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.51 : 18,372.40 = 8,015.34 : x
  2. Step 2: Convert to fraction form
    13,321.51/18,372.40 = 8,015.34/x
  3. Step 3: Cross multiply
    13,321.51x = 18,372.40 × 8,015.34
  4. Step 4: Simplify right side
    13,321.51x = 147,260,986.69
  5. Step 5: Solve for x
    x = 147,260,986.69/13,321.51
  6. Step 6: Final answer
    x = 11,054.37

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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.