Home / 13,612.45-20,415.25-4,845.31

Finding the Fourth Proportional to 13,612.45, 20,415.25 and 4,845.31

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Solution

The fourth proportional to 13,612.45, 20,415.25 and 4,845.31 is: 7,266.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.45 : 20,415.25 = 4,845.31 : x
  2. Step 2: Convert to fraction form
    13,612.45/20,415.25 = 4,845.31/x
  3. Step 3: Cross multiply
    13,612.45x = 20,415.25 × 4,845.31
  4. Step 4: Simplify right side
    13,612.45x = 98,918,214.98
  5. Step 5: Solve for x
    x = 98,918,214.98/13,612.45
  6. Step 6: Final answer
    x = 7,266.75

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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.