Home / 13,859.44-19,125.60-7,891.96

Finding the Fourth Proportional to 13,859.44, 19,125.60 and 7,891.96

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Solution

The fourth proportional to 13,859.44, 19,125.60 and 7,891.96 is: 10,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.44 : 19,125.60 = 7,891.96 : x
  2. Step 2: Convert to fraction form
    13,859.44/19,125.60 = 7,891.96/x
  3. Step 3: Cross multiply
    13,859.44x = 19,125.60 × 7,891.96
  4. Step 4: Simplify right side
    13,859.44x = 150,938,470.18
  5. Step 5: Solve for x
    x = 150,938,470.18/13,859.44
  6. Step 6: Final answer
    x = 10,890.66

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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.