Home / 13,868.44-19,139.79-8,205.01

Finding the Fourth Proportional to 13,868.44, 19,139.79 and 8,205.01

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Solution

The fourth proportional to 13,868.44, 19,139.79 and 8,205.01 is: 11,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.44 : 19,139.79 = 8,205.01 : x
  2. Step 2: Convert to fraction form
    13,868.44/19,139.79 = 8,205.01/x
  3. Step 3: Cross multiply
    13,868.44x = 19,139.79 × 8,205.01
  4. Step 4: Simplify right side
    13,868.44x = 157,042,099.99
  5. Step 5: Solve for x
    x = 157,042,099.99/13,868.44
  6. Step 6: Final answer
    x = 11,323.70

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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.