Home / 20,530.67-30,853.71-12,212.19

Finding the Fourth Proportional to 20,530.67, 30,853.71 and 12,212.19

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Solution

The fourth proportional to 20,530.67, 30,853.71 and 12,212.19 is: 18,352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.67 : 30,853.71 = 12,212.19 : x
  2. Step 2: Convert to fraction form
    20,530.67/30,853.71 = 12,212.19/x
  3. Step 3: Cross multiply
    20,530.67x = 30,853.71 × 12,212.19
  4. Step 4: Simplify right side
    20,530.67x = 376,791,368.72
  5. Step 5: Solve for x
    x = 376,791,368.72/20,530.67
  6. Step 6: Final answer
    x = 18,352.61

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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.