Home / 13,418.93-20,128.58-4,059.02

Finding the Fourth Proportional to 13,418.93, 20,128.58 and 4,059.02

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Solution

The fourth proportional to 13,418.93, 20,128.58 and 4,059.02 is: 6,088.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.93 : 20,128.58 = 4,059.02 : x
  2. Step 2: Convert to fraction form
    13,418.93/20,128.58 = 4,059.02/x
  3. Step 3: Cross multiply
    13,418.93x = 20,128.58 × 4,059.02
  4. Step 4: Simplify right side
    13,418.93x = 81,702,187.85
  5. Step 5: Solve for x
    x = 81,702,187.85/13,418.93
  6. Step 6: Final answer
    x = 6,088.58

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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.