Home / 20,166.40-30,249.60-11,418.40

Finding the Fourth Proportional to 20,166.40, 30,249.60 and 11,418.40

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Solution

The fourth proportional to 20,166.40, 30,249.60 and 11,418.40 is: 17,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,166.40 : 30,249.60 = 11,418.40 : x
  2. Step 2: Convert to fraction form
    20,166.40/30,249.60 = 11,418.40/x
  3. Step 3: Cross multiply
    20,166.40x = 30,249.60 × 11,418.40
  4. Step 4: Simplify right side
    20,166.40x = 345,402,032.64
  5. Step 5: Solve for x
    x = 345,402,032.64/20,166.40
  6. Step 6: Final answer
    x = 17,127.60

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1.5x scale

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.