Home / 18,815.94-28,168.53-13,907.46

Finding the Fourth Proportional to 18,815.94, 28,168.53 and 13,907.46

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Solution

The fourth proportional to 18,815.94, 28,168.53 and 13,907.46 is: 20,820.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.94 : 28,168.53 = 13,907.46 : x
  2. Step 2: Convert to fraction form
    18,815.94/28,168.53 = 13,907.46/x
  3. Step 3: Cross multiply
    18,815.94x = 28,168.53 × 13,907.46
  4. Step 4: Simplify right side
    18,815.94x = 391,752,704.23
  5. Step 5: Solve for x
    x = 391,752,704.23/18,815.94
  6. Step 6: Final answer
    x = 20,820.26

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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.