Home / 20,544.76-30,890.49-18,920.91

Finding the Fourth Proportional to 20,544.76, 30,890.49 and 18,920.91

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Solution

The fourth proportional to 20,544.76, 30,890.49 and 18,920.91 is: 28,448.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.76 : 30,890.49 = 18,920.91 : x
  2. Step 2: Convert to fraction form
    20,544.76/30,890.49 = 18,920.91/x
  3. Step 3: Cross multiply
    20,544.76x = 30,890.49 × 18,920.91
  4. Step 4: Simplify right side
    20,544.76x = 584,476,181.15
  5. Step 5: Solve for x
    x = 584,476,181.15/20,544.76
  6. Step 6: Final answer
    x = 28,448.92

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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.