Home / 13,405.36-18,500.24-7,741.15

Finding the Fourth Proportional to 13,405.36, 18,500.24 and 7,741.15

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Solution

The fourth proportional to 13,405.36, 18,500.24 and 7,741.15 is: 10,683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.36 : 18,500.24 = 7,741.15 : x
  2. Step 2: Convert to fraction form
    13,405.36/18,500.24 = 7,741.15/x
  3. Step 3: Cross multiply
    13,405.36x = 18,500.24 × 7,741.15
  4. Step 4: Simplify right side
    13,405.36x = 143,213,132.88
  5. Step 5: Solve for x
    x = 143,213,132.88/13,405.36
  6. Step 6: Final answer
    x = 10,683.27

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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.