Home / 20,133.51-30,204.42-7,651.21

Finding the Fourth Proportional to 20,133.51, 30,204.42 and 7,651.21

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Solution

The fourth proportional to 20,133.51, 30,204.42 and 7,651.21 is: 11,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.51 : 30,204.42 = 7,651.21 : x
  2. Step 2: Convert to fraction form
    20,133.51/30,204.42 = 7,651.21/x
  3. Step 3: Cross multiply
    20,133.51x = 30,204.42 × 7,651.21
  4. Step 4: Simplify right side
    20,133.51x = 231,100,360.35
  5. Step 5: Solve for x
    x = 231,100,360.35/20,133.51
  6. Step 6: Final answer
    x = 11,478.39

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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.