Home / 13,385.79-20,078.19-6,370.83

Finding the Fourth Proportional to 13,385.79, 20,078.19 and 6,370.83

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Solution

The fourth proportional to 13,385.79, 20,078.19 and 6,370.83 is: 9,556.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.79 : 20,078.19 = 6,370.83 : x
  2. Step 2: Convert to fraction form
    13,385.79/20,078.19 = 6,370.83/x
  3. Step 3: Cross multiply
    13,385.79x = 20,078.19 × 6,370.83
  4. Step 4: Simplify right side
    13,385.79x = 127,914,735.20
  5. Step 5: Solve for x
    x = 127,914,735.20/13,385.79
  6. Step 6: Final answer
    x = 9,556.01

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1.5x scale

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.