Home / 20,868.03-28,811.30-18,626.09

Finding the Fourth Proportional to 20,868.03, 28,811.30 and 18,626.09

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Solution

The fourth proportional to 20,868.03, 28,811.30 and 18,626.09 is: 25,715.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.03 : 28,811.30 = 18,626.09 : x
  2. Step 2: Convert to fraction form
    20,868.03/28,811.30 = 18,626.09/x
  3. Step 3: Cross multiply
    20,868.03x = 28,811.30 × 18,626.09
  4. Step 4: Simplify right side
    20,868.03x = 536,641,629.63
  5. Step 5: Solve for x
    x = 536,641,629.63/20,868.03
  6. Step 6: Final answer
    x = 25,715.97

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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.