Home / 15,756.74-21,743.26-8,683.16

Finding the Fourth Proportional to 15,756.74, 21,743.26 and 8,683.16

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Solution

The fourth proportional to 15,756.74, 21,743.26 and 8,683.16 is: 11,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.74 : 21,743.26 = 8,683.16 : x
  2. Step 2: Convert to fraction form
    15,756.74/21,743.26 = 8,683.16/x
  3. Step 3: Cross multiply
    15,756.74x = 21,743.26 × 8,683.16
  4. Step 4: Simplify right side
    15,756.74x = 188,800,096.79
  5. Step 5: Solve for x
    x = 188,800,096.79/15,756.74
  6. Step 6: Final answer
    x = 11,982.18

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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.