Home / 13,390.96-20,090.60-6,464.24

Finding the Fourth Proportional to 13,390.96, 20,090.60 and 6,464.24

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Solution

The fourth proportional to 13,390.96, 20,090.60 and 6,464.24 is: 9,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.96 : 20,090.60 = 6,464.24 : x
  2. Step 2: Convert to fraction form
    13,390.96/20,090.60 = 6,464.24/x
  3. Step 3: Cross multiply
    13,390.96x = 20,090.60 × 6,464.24
  4. Step 4: Simplify right side
    13,390.96x = 129,870,460.14
  5. Step 5: Solve for x
    x = 129,870,460.14/13,390.96
  6. Step 6: Final answer
    x = 9,698.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.