Home / 13,396.24-18,486.79-8,090.07

Finding the Fourth Proportional to 13,396.24, 18,486.79 and 8,090.07

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Solution

The fourth proportional to 13,396.24, 18,486.79 and 8,090.07 is: 11,164.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.24 : 18,486.79 = 8,090.07 : x
  2. Step 2: Convert to fraction form
    13,396.24/18,486.79 = 8,090.07/x
  3. Step 3: Cross multiply
    13,396.24x = 18,486.79 × 8,090.07
  4. Step 4: Simplify right side
    13,396.24x = 149,559,425.18
  5. Step 5: Solve for x
    x = 149,559,425.18/13,396.24
  6. Step 6: Final answer
    x = 11,164.28

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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.