Home / 30,815.40-46,196.10-20,922.60

Finding the Fourth Proportional to 30,815.40, 46,196.10 and 20,922.60

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Solution

The fourth proportional to 30,815.40, 46,196.10 and 20,922.60 is: 31,365.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.40 : 46,196.10 = 20,922.60 : x
  2. Step 2: Convert to fraction form
    30,815.40/46,196.10 = 20,922.60/x
  3. Step 3: Cross multiply
    30,815.40x = 46,196.10 × 20,922.60
  4. Step 4: Simplify right side
    30,815.40x = 966,542,521.86
  5. Step 5: Solve for x
    x = 966,542,521.86/30,815.40
  6. Step 6: Final answer
    x = 31,365.57

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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.