Home / 11,815.81-16,290.61-9,683.53

Finding the Fourth Proportional to 11,815.81, 16,290.61 and 9,683.53

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Solution

The fourth proportional to 11,815.81, 16,290.61 and 9,683.53 is: 13,350.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.81 : 16,290.61 = 9,683.53 : x
  2. Step 2: Convert to fraction form
    11,815.81/16,290.61 = 9,683.53/x
  3. Step 3: Cross multiply
    11,815.81x = 16,290.61 × 9,683.53
  4. Step 4: Simplify right side
    11,815.81x = 157,750,610.65
  5. Step 5: Solve for x
    x = 157,750,610.65/11,815.81
  6. Step 6: Final answer
    x = 13,350.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.