Home / 13,991.20-20,983.34-8,723.50

Finding the Fourth Proportional to 13,991.20, 20,983.34 and 8,723.50

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Solution

The fourth proportional to 13,991.20, 20,983.34 and 8,723.50 is: 13,083.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.20 : 20,983.34 = 8,723.50 : x
  2. Step 2: Convert to fraction form
    13,991.20/20,983.34 = 8,723.50/x
  3. Step 3: Cross multiply
    13,991.20x = 20,983.34 × 8,723.50
  4. Step 4: Simplify right side
    13,991.20x = 183,048,166.49
  5. Step 5: Solve for x
    x = 183,048,166.49/13,991.20
  6. Step 6: Final answer
    x = 13,083.09

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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.