Home / 18,412.45-25,409.10-11,242.33

Finding the Fourth Proportional to 18,412.45, 25,409.10 and 11,242.33

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Solution

The fourth proportional to 18,412.45, 25,409.10 and 11,242.33 is: 15,514.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.45 : 25,409.10 = 11,242.33 : x
  2. Step 2: Convert to fraction form
    18,412.45/25,409.10 = 11,242.33/x
  3. Step 3: Cross multiply
    18,412.45x = 25,409.10 × 11,242.33
  4. Step 4: Simplify right side
    18,412.45x = 285,657,487.20
  5. Step 5: Solve for x
    x = 285,657,487.20/18,412.45
  6. Step 6: Final answer
    x = 15,514.37

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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.