Home / 26,405.28-39,570-15,879.60

Finding the Fourth Proportional to 26,405.28, 39,570 and 15,879.60

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Solution

The fourth proportional to 26,405.28, 39,570 and 15,879.60 is: 23,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,405.28 : 39,570 = 15,879.60 : x
  2. Step 2: Convert to fraction form
    26,405.28/39,570 = 15,879.60/x
  3. Step 3: Cross multiply
    26,405.28x = 39,570 × 15,879.60
  4. Step 4: Simplify right side
    26,405.28x = 628,355,772
  5. Step 5: Solve for x
    x = 628,355,772/26,405.28
  6. Step 6: Final answer
    x = 23,796.60

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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.