Home / 13,640.12-20,460.22-4,152.52

Finding the Fourth Proportional to 13,640.12, 20,460.22 and 4,152.52

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Solution

The fourth proportional to 13,640.12, 20,460.22 and 4,152.52 is: 6,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.12 : 20,460.22 = 4,152.52 : x
  2. Step 2: Convert to fraction form
    13,640.12/20,460.22 = 4,152.52/x
  3. Step 3: Cross multiply
    13,640.12x = 20,460.22 × 4,152.52
  4. Step 4: Simplify right side
    13,640.12x = 84,961,472.75
  5. Step 5: Solve for x
    x = 84,961,472.75/13,640.12
  6. Step 6: Final answer
    x = 6,228.79

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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.