Home / 13,448.40-20,172.60-8,782.80

Finding the Fourth Proportional to 13,448.40, 20,172.60 and 8,782.80

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Solution

The fourth proportional to 13,448.40, 20,172.60 and 8,782.80 is: 13,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.40 : 20,172.60 = 8,782.80 : x
  2. Step 2: Convert to fraction form
    13,448.40/20,172.60 = 8,782.80/x
  3. Step 3: Cross multiply
    13,448.40x = 20,172.60 × 8,782.80
  4. Step 4: Simplify right side
    13,448.40x = 177,171,911.28
  5. Step 5: Solve for x
    x = 177,171,911.28/13,448.40
  6. Step 6: Final answer
    x = 13,174.20

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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.