Home / 13,985.36-20,968.32-6,189.92

Finding the Fourth Proportional to 13,985.36, 20,968.32 and 6,189.92

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Solution

The fourth proportional to 13,985.36, 20,968.32 and 6,189.92 is: 9,280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.36 : 20,968.32 = 6,189.92 : x
  2. Step 2: Convert to fraction form
    13,985.36/20,968.32 = 6,189.92/x
  3. Step 3: Cross multiply
    13,985.36x = 20,968.32 × 6,189.92
  4. Step 4: Simplify right side
    13,985.36x = 129,792,223.33
  5. Step 5: Solve for x
    x = 129,792,223.33/13,985.36
  6. Step 6: Final answer
    x = 9,280.58

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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.