Home / 13,982.94-20,970.63-4,119.66

Finding the Fourth Proportional to 13,982.94, 20,970.63 and 4,119.66

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Solution

The fourth proportional to 13,982.94, 20,970.63 and 4,119.66 is: 6,178.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.94 : 20,970.63 = 4,119.66 : x
  2. Step 2: Convert to fraction form
    13,982.94/20,970.63 = 4,119.66/x
  3. Step 3: Cross multiply
    13,982.94x = 20,970.63 × 4,119.66
  4. Step 4: Simplify right side
    13,982.94x = 86,391,865.59
  5. Step 5: Solve for x
    x = 86,391,865.59/13,982.94
  6. Step 6: Final answer
    x = 6,178.38

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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.