Home / 13,878.68-20,811.63-4,015.61

Finding the Fourth Proportional to 13,878.68, 20,811.63 and 4,015.61

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Solution

The fourth proportional to 13,878.68, 20,811.63 and 4,015.61 is: 6,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.68 : 20,811.63 = 4,015.61 : x
  2. Step 2: Convert to fraction form
    13,878.68/20,811.63 = 4,015.61/x
  3. Step 3: Cross multiply
    13,878.68x = 20,811.63 × 4,015.61
  4. Step 4: Simplify right side
    13,878.68x = 83,571,378.59
  5. Step 5: Solve for x
    x = 83,571,378.59/13,878.68
  6. Step 6: Final answer
    x = 6,021.57

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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.