Home / 19,139.67-28,692.50-7,450.16

Finding the Fourth Proportional to 19,139.67, 28,692.50 and 7,450.16

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Solution

The fourth proportional to 19,139.67, 28,692.50 and 7,450.16 is: 11,168.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.67 : 28,692.50 = 7,450.16 : x
  2. Step 2: Convert to fraction form
    19,139.67/28,692.50 = 7,450.16/x
  3. Step 3: Cross multiply
    19,139.67x = 28,692.50 × 7,450.16
  4. Step 4: Simplify right side
    19,139.67x = 213,763,535.09
  5. Step 5: Solve for x
    x = 213,763,535.09/19,139.67
  6. Step 6: Final answer
    x = 11,168.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.