Home / 13,408.58-20,113.08-5,086.40

Finding the Fourth Proportional to 13,408.58, 20,113.08 and 5,086.40

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Solution

The fourth proportional to 13,408.58, 20,113.08 and 5,086.40 is: 7,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.58 : 20,113.08 = 5,086.40 : x
  2. Step 2: Convert to fraction form
    13,408.58/20,113.08 = 5,086.40/x
  3. Step 3: Cross multiply
    13,408.58x = 20,113.08 × 5,086.40
  4. Step 4: Simplify right side
    13,408.58x = 102,303,170.11
  5. Step 5: Solve for x
    x = 102,303,170.11/13,408.58
  6. Step 6: Final answer
    x = 7,629.68

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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.