Home / 28,106.44-42,164.24-13,128.54

Finding the Fourth Proportional to 28,106.44, 42,164.24 and 13,128.54

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Solution

The fourth proportional to 28,106.44, 42,164.24 and 13,128.54 is: 19,694.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.44 : 42,164.24 = 13,128.54 : x
  2. Step 2: Convert to fraction form
    28,106.44/42,164.24 = 13,128.54/x
  3. Step 3: Cross multiply
    28,106.44x = 42,164.24 × 13,128.54
  4. Step 4: Simplify right side
    28,106.44x = 553,554,911.41
  5. Step 5: Solve for x
    x = 553,554,911.41/28,106.44
  6. Step 6: Final answer
    x = 19,694.95

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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.