Home / 13,104.45-18,090.27-8,391.42

Finding the Fourth Proportional to 13,104.45, 18,090.27 and 8,391.42

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Solution

The fourth proportional to 13,104.45, 18,090.27 and 8,391.42 is: 11,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.45 : 18,090.27 = 8,391.42 : x
  2. Step 2: Convert to fraction form
    13,104.45/18,090.27 = 8,391.42/x
  3. Step 3: Cross multiply
    13,104.45x = 18,090.27 × 8,391.42
  4. Step 4: Simplify right side
    13,104.45x = 151,803,053.48
  5. Step 5: Solve for x
    x = 151,803,053.48/13,104.45
  6. Step 6: Final answer
    x = 11,584.08

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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.