Home / 13,683.64-20,517.26-6,649.81

Finding the Fourth Proportional to 13,683.64, 20,517.26 and 6,649.81

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Solution

The fourth proportional to 13,683.64, 20,517.26 and 6,649.81 is: 9,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,683.64 : 20,517.26 = 6,649.81 : x
  2. Step 2: Convert to fraction form
    13,683.64/20,517.26 = 6,649.81/x
  3. Step 3: Cross multiply
    13,683.64x = 20,517.26 × 6,649.81
  4. Step 4: Simplify right side
    13,683.64x = 136,435,880.72
  5. Step 5: Solve for x
    x = 136,435,880.72/13,683.64
  6. Step 6: Final answer
    x = 9,970.73

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1.5x scale

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.