Home / 13,759.12-20,640.12-4,525.12

Finding the Fourth Proportional to 13,759.12, 20,640.12 and 4,525.12

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Solution

The fourth proportional to 13,759.12, 20,640.12 and 4,525.12 is: 6,788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.12 : 20,640.12 = 4,525.12 : x
  2. Step 2: Convert to fraction form
    13,759.12/20,640.12 = 4,525.12/x
  3. Step 3: Cross multiply
    13,759.12x = 20,640.12 × 4,525.12
  4. Step 4: Simplify right side
    13,759.12x = 93,399,019.81
  5. Step 5: Solve for x
    x = 93,399,019.81/13,759.12
  6. Step 6: Final answer
    x = 6,788.15

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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.