Home / 13,986.68-20,980.07-5,666.85

Finding the Fourth Proportional to 13,986.68, 20,980.07 and 5,666.85

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Solution

The fourth proportional to 13,986.68, 20,980.07 and 5,666.85 is: 8,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.68 : 20,980.07 = 5,666.85 : x
  2. Step 2: Convert to fraction form
    13,986.68/20,980.07 = 5,666.85/x
  3. Step 3: Cross multiply
    13,986.68x = 20,980.07 × 5,666.85
  4. Step 4: Simplify right side
    13,986.68x = 118,890,923.85
  5. Step 5: Solve for x
    x = 118,890,923.85/13,986.68
  6. Step 6: Final answer
    x = 8,500.30

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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.