Home / 10,420.64-15,622.32-3,845.60

Finding the Fourth Proportional to 10,420.64, 15,622.32 and 3,845.60

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Solution

The fourth proportional to 10,420.64, 15,622.32 and 3,845.60 is: 5,765.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.64 : 15,622.32 = 3,845.60 : x
  2. Step 2: Convert to fraction form
    10,420.64/15,622.32 = 3,845.60/x
  3. Step 3: Cross multiply
    10,420.64x = 15,622.32 × 3,845.60
  4. Step 4: Simplify right side
    10,420.64x = 60,077,193.79
  5. Step 5: Solve for x
    x = 60,077,193.79/10,420.64
  6. Step 6: Final answer
    x = 5,765.21

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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.