Home / 14,105.80-21,144.30-8,259.40

Finding the Fourth Proportional to 14,105.80, 21,144.30 and 8,259.40

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Solution

The fourth proportional to 14,105.80, 21,144.30 and 8,259.40 is: 12,380.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,105.80 : 21,144.30 = 8,259.40 : x
  2. Step 2: Convert to fraction form
    14,105.80/21,144.30 = 8,259.40/x
  3. Step 3: Cross multiply
    14,105.80x = 21,144.30 × 8,259.40
  4. Step 4: Simplify right side
    14,105.80x = 174,639,231.42
  5. Step 5: Solve for x
    x = 174,639,231.42/14,105.80
  6. Step 6: Final answer
    x = 12,380.67

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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.