Home / 13,868.82-19,135.98-7,898.85

Finding the Fourth Proportional to 13,868.82, 19,135.98 and 7,898.85

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Solution

The fourth proportional to 13,868.82, 19,135.98 and 7,898.85 is: 10,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.82 : 19,135.98 = 7,898.85 : x
  2. Step 2: Convert to fraction form
    13,868.82/19,135.98 = 7,898.85/x
  3. Step 3: Cross multiply
    13,868.82x = 19,135.98 × 7,898.85
  4. Step 4: Simplify right side
    13,868.82x = 151,152,235.62
  5. Step 5: Solve for x
    x = 151,152,235.62/13,868.82
  6. Step 6: Final answer
    x = 10,898.71

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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.