Home / 13,228.80-19,814.40-8,025.60

Finding the Fourth Proportional to 13,228.80, 19,814.40 and 8,025.60

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Solution

The fourth proportional to 13,228.80, 19,814.40 and 8,025.60 is: 12,020.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.80 : 19,814.40 = 8,025.60 : x
  2. Step 2: Convert to fraction form
    13,228.80/19,814.40 = 8,025.60/x
  3. Step 3: Cross multiply
    13,228.80x = 19,814.40 × 8,025.60
  4. Step 4: Simplify right side
    13,228.80x = 159,022,448.64
  5. Step 5: Solve for x
    x = 159,022,448.64/13,228.80
  6. Step 6: Final answer
    x = 12,020.93

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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.