Home / 11,719.28-16,172.80-6,414.60

Finding the Fourth Proportional to 11,719.28, 16,172.80 and 6,414.60

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Solution

The fourth proportional to 11,719.28, 16,172.80 and 6,414.60 is: 8,852.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.28 : 16,172.80 = 6,414.60 : x
  2. Step 2: Convert to fraction form
    11,719.28/16,172.80 = 6,414.60/x
  3. Step 3: Cross multiply
    11,719.28x = 16,172.80 × 6,414.60
  4. Step 4: Simplify right side
    11,719.28x = 103,742,042.88
  5. Step 5: Solve for x
    x = 103,742,042.88/11,719.28
  6. Step 6: Final answer
    x = 8,852.25

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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.