Home / 13,655.22-18,844.21-7,991.06

Finding the Fourth Proportional to 13,655.22, 18,844.21 and 7,991.06

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Solution

The fourth proportional to 13,655.22, 18,844.21 and 7,991.06 is: 11,027.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.22 : 18,844.21 = 7,991.06 : x
  2. Step 2: Convert to fraction form
    13,655.22/18,844.21 = 7,991.06/x
  3. Step 3: Cross multiply
    13,655.22x = 18,844.21 × 7,991.06
  4. Step 4: Simplify right side
    13,655.22x = 150,585,212.76
  5. Step 5: Solve for x
    x = 150,585,212.76/13,655.22
  6. Step 6: Final answer
    x = 11,027.67

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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.