Home / 13,666.37-20,499.55-3,805.90

Finding the Fourth Proportional to 13,666.37, 20,499.55 and 3,805.90

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Solution

The fourth proportional to 13,666.37, 20,499.55 and 3,805.90 is: 5,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.37 : 20,499.55 = 3,805.90 : x
  2. Step 2: Convert to fraction form
    13,666.37/20,499.55 = 3,805.90/x
  3. Step 3: Cross multiply
    13,666.37x = 20,499.55 × 3,805.90
  4. Step 4: Simplify right side
    13,666.37x = 78,019,176.58
  5. Step 5: Solve for x
    x = 78,019,176.58/13,666.37
  6. Step 6: Final answer
    x = 5,708.85

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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.