Home / 13,584.40-20,388.60-8,030.80

Finding the Fourth Proportional to 13,584.40, 20,388.60 and 8,030.80

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Solution

The fourth proportional to 13,584.40, 20,388.60 and 8,030.80 is: 12,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,584.40 : 20,388.60 = 8,030.80 : x
  2. Step 2: Convert to fraction form
    13,584.40/20,388.60 = 8,030.80/x
  3. Step 3: Cross multiply
    13,584.40x = 20,388.60 × 8,030.80
  4. Step 4: Simplify right side
    13,584.40x = 163,736,768.88
  5. Step 5: Solve for x
    x = 163,736,768.88/13,584.40
  6. Step 6: Final answer
    x = 12,053.29

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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.