Home / 13,114.80-19,672.20-5,724.60

Finding the Fourth Proportional to 13,114.80, 19,672.20 and 5,724.60

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Solution

The fourth proportional to 13,114.80, 19,672.20 and 5,724.60 is: 8,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.80 : 19,672.20 = 5,724.60 : x
  2. Step 2: Convert to fraction form
    13,114.80/19,672.20 = 5,724.60/x
  3. Step 3: Cross multiply
    13,114.80x = 19,672.20 × 5,724.60
  4. Step 4: Simplify right side
    13,114.80x = 112,615,476.12
  5. Step 5: Solve for x
    x = 112,615,476.12/13,114.80
  6. Step 6: Final answer
    x = 8,586.90

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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.