Home / 13,412.30-20,118.66-5,090.12

Finding the Fourth Proportional to 13,412.30, 20,118.66 and 5,090.12

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Solution

The fourth proportional to 13,412.30, 20,118.66 and 5,090.12 is: 7,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.30 : 20,118.66 = 5,090.12 : x
  2. Step 2: Convert to fraction form
    13,412.30/20,118.66 = 5,090.12/x
  3. Step 3: Cross multiply
    13,412.30x = 20,118.66 × 5,090.12
  4. Step 4: Simplify right side
    13,412.30x = 102,406,393.64
  5. Step 5: Solve for x
    x = 102,406,393.64/13,412.30
  6. Step 6: Final answer
    x = 7,635.26

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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.