Home / 13,869.82-19,137.36-7,899.85

Finding the Fourth Proportional to 13,869.82, 19,137.36 and 7,899.85

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Solution

The fourth proportional to 13,869.82, 19,137.36 and 7,899.85 is: 10,900.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.82 : 19,137.36 = 7,899.85 : x
  2. Step 2: Convert to fraction form
    13,869.82/19,137.36 = 7,899.85/x
  3. Step 3: Cross multiply
    13,869.82x = 19,137.36 × 7,899.85
  4. Step 4: Simplify right side
    13,869.82x = 151,182,273.40
  5. Step 5: Solve for x
    x = 151,182,273.40/13,869.82
  6. Step 6: Final answer
    x = 10,900.09

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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.