Home / 30,213.12-41,708.04-18,119.36

Finding the Fourth Proportional to 30,213.12, 41,708.04 and 18,119.36

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Solution

The fourth proportional to 30,213.12, 41,708.04 and 18,119.36 is: 25,013.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.12 : 41,708.04 = 18,119.36 : x
  2. Step 2: Convert to fraction form
    30,213.12/41,708.04 = 18,119.36/x
  3. Step 3: Cross multiply
    30,213.12x = 41,708.04 × 18,119.36
  4. Step 4: Simplify right side
    30,213.12x = 755,722,991.65
  5. Step 5: Solve for x
    x = 755,722,991.65/30,213.12
  6. Step 6: Final answer
    x = 25,013.07

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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.