Home / 28,968.40-43,420.20-12,325.60

Finding the Fourth Proportional to 28,968.40, 43,420.20 and 12,325.60

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Solution

The fourth proportional to 28,968.40, 43,420.20 and 12,325.60 is: 18,474.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,968.40 : 43,420.20 = 12,325.60 : x
  2. Step 2: Convert to fraction form
    28,968.40/43,420.20 = 12,325.60/x
  3. Step 3: Cross multiply
    28,968.40x = 43,420.20 × 12,325.60
  4. Step 4: Simplify right side
    28,968.40x = 535,180,017.12
  5. Step 5: Solve for x
    x = 535,180,017.12/28,968.40
  6. Step 6: Final answer
    x = 18,474.61

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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.