Home / 13,876.21-19,149.01-7,907.68

Finding the Fourth Proportional to 13,876.21, 19,149.01 and 7,907.68

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Solution

The fourth proportional to 13,876.21, 19,149.01 and 7,907.68 is: 10,912.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,876.21 : 19,149.01 = 7,907.68 : x
  2. Step 2: Convert to fraction form
    13,876.21/19,149.01 = 7,907.68/x
  3. Step 3: Cross multiply
    13,876.21x = 19,149.01 × 7,907.68
  4. Step 4: Simplify right side
    13,876.21x = 151,424,139.85
  5. Step 5: Solve for x
    x = 151,424,139.85/13,876.21
  6. Step 6: Final answer
    x = 10,912.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.