Home / 11,683.18-17,518.04-7,989.90

Finding the Fourth Proportional to 11,683.18, 17,518.04 and 7,989.90

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Solution

The fourth proportional to 11,683.18, 17,518.04 and 7,989.90 is: 11,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,683.18 : 17,518.04 = 7,989.90 : x
  2. Step 2: Convert to fraction form
    11,683.18/17,518.04 = 7,989.90/x
  3. Step 3: Cross multiply
    11,683.18x = 17,518.04 × 7,989.90
  4. Step 4: Simplify right side
    11,683.18x = 139,967,387.80
  5. Step 5: Solve for x
    x = 139,967,387.80/11,683.18
  6. Step 6: Final answer
    x = 11,980.25

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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.