Home / 13,788.38-20,682.57-3,400.13

Finding the Fourth Proportional to 13,788.38, 20,682.57 and 3,400.13

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Solution

The fourth proportional to 13,788.38, 20,682.57 and 3,400.13 is: 5,100.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.38 : 20,682.57 = 3,400.13 : x
  2. Step 2: Convert to fraction form
    13,788.38/20,682.57 = 3,400.13/x
  3. Step 3: Cross multiply
    13,788.38x = 20,682.57 × 3,400.13
  4. Step 4: Simplify right side
    13,788.38x = 70,323,323.32
  5. Step 5: Solve for x
    x = 70,323,323.32/13,788.38
  6. Step 6: Final answer
    x = 5,100.19

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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.