Home / 13,199.96-19,800.12-5,403.80

Finding the Fourth Proportional to 13,199.96, 19,800.12 and 5,403.80

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Solution

The fourth proportional to 13,199.96, 19,800.12 and 5,403.80 is: 8,105.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.96 : 19,800.12 = 5,403.80 : x
  2. Step 2: Convert to fraction form
    13,199.96/19,800.12 = 5,403.80/x
  3. Step 3: Cross multiply
    13,199.96x = 19,800.12 × 5,403.80
  4. Step 4: Simplify right side
    13,199.96x = 106,995,888.46
  5. Step 5: Solve for x
    x = 106,995,888.46/13,199.96
  6. Step 6: Final answer
    x = 8,105.77

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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.