Home / 13,399.30-18,488.65-8,090.56

Finding the Fourth Proportional to 13,399.30, 18,488.65 and 8,090.56

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Solution

The fourth proportional to 13,399.30, 18,488.65 and 8,090.56 is: 11,163.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.30 : 18,488.65 = 8,090.56 : x
  2. Step 2: Convert to fraction form
    13,399.30/18,488.65 = 8,090.56/x
  3. Step 3: Cross multiply
    13,399.30x = 18,488.65 × 8,090.56
  4. Step 4: Simplify right side
    13,399.30x = 149,583,532.14
  5. Step 5: Solve for x
    x = 149,583,532.14/13,399.30
  6. Step 6: Final answer
    x = 11,163.53

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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.