Home / 13,619.75-20,406.33-6,603.12

Finding the Fourth Proportional to 13,619.75, 20,406.33 and 6,603.12

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Solution

The fourth proportional to 13,619.75, 20,406.33 and 6,603.12 is: 9,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.75 : 20,406.33 = 6,603.12 : x
  2. Step 2: Convert to fraction form
    13,619.75/20,406.33 = 6,603.12/x
  3. Step 3: Cross multiply
    13,619.75x = 20,406.33 × 6,603.12
  4. Step 4: Simplify right side
    13,619.75x = 134,745,445.75
  5. Step 5: Solve for x
    x = 134,745,445.75/13,619.75
  6. Step 6: Final answer
    x = 9,893.39

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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.