Home / 28,078.83-42,106.54-11,427.56

Finding the Fourth Proportional to 28,078.83, 42,106.54 and 11,427.56

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Solution

The fourth proportional to 28,078.83, 42,106.54 and 11,427.56 is: 17,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.83 : 42,106.54 = 11,427.56 : x
  2. Step 2: Convert to fraction form
    28,078.83/42,106.54 = 11,427.56/x
  3. Step 3: Cross multiply
    28,078.83x = 42,106.54 × 11,427.56
  4. Step 4: Simplify right side
    28,078.83x = 481,174,866.18
  5. Step 5: Solve for x
    x = 481,174,866.18/28,078.83
  6. Step 6: Final answer
    x = 17,136.57

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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.