Home / 19,172.15-28,749.10-6,690.66

Finding the Fourth Proportional to 19,172.15, 28,749.10 and 6,690.66

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Solution

The fourth proportional to 19,172.15, 28,749.10 and 6,690.66 is: 10,032.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.15 : 28,749.10 = 6,690.66 : x
  2. Step 2: Convert to fraction form
    19,172.15/28,749.10 = 6,690.66/x
  3. Step 3: Cross multiply
    19,172.15x = 28,749.10 × 6,690.66
  4. Step 4: Simplify right side
    19,172.15x = 192,350,453.41
  5. Step 5: Solve for x
    x = 192,350,453.41/19,172.15
  6. Step 6: Final answer
    x = 10,032.81

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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.