Home / 20,081.04-30,128.73-12,199.63

Finding the Fourth Proportional to 20,081.04, 30,128.73 and 12,199.63

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Solution

The fourth proportional to 20,081.04, 30,128.73 and 12,199.63 is: 18,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.04 : 30,128.73 = 12,199.63 : x
  2. Step 2: Convert to fraction form
    20,081.04/30,128.73 = 12,199.63/x
  3. Step 3: Cross multiply
    20,081.04x = 30,128.73 × 12,199.63
  4. Step 4: Simplify right side
    20,081.04x = 367,559,297.37
  5. Step 5: Solve for x
    x = 367,559,297.37/20,081.04
  6. Step 6: Final answer
    x = 18,303.80

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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.