Home / 13,128.52-19,683.06-7,933.18

Finding the Fourth Proportional to 13,128.52, 19,683.06 and 7,933.18

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Solution

The fourth proportional to 13,128.52, 19,683.06 and 7,933.18 is: 11,893.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.52 : 19,683.06 = 7,933.18 : x
  2. Step 2: Convert to fraction form
    13,128.52/19,683.06 = 7,933.18/x
  3. Step 3: Cross multiply
    13,128.52x = 19,683.06 × 7,933.18
  4. Step 4: Simplify right side
    13,128.52x = 156,149,257.93
  5. Step 5: Solve for x
    x = 156,149,257.93/13,128.52
  6. Step 6: Final answer
    x = 11,893.90

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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.