Home / 20,215.36-30,329.93-12,333.66

Finding the Fourth Proportional to 20,215.36, 30,329.93 and 12,333.66

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Solution

The fourth proportional to 20,215.36, 30,329.93 and 12,333.66 is: 18,504.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.36 : 30,329.93 = 12,333.66 : x
  2. Step 2: Convert to fraction form
    20,215.36/30,329.93 = 12,333.66/x
  3. Step 3: Cross multiply
    20,215.36x = 30,329.93 × 12,333.66
  4. Step 4: Simplify right side
    20,215.36x = 374,079,044.44
  5. Step 5: Solve for x
    x = 374,079,044.44/20,215.36
  6. Step 6: Final answer
    x = 18,504.69

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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.