Home / 13,986.62-20,980.72-5,666.71

Finding the Fourth Proportional to 13,986.62, 20,980.72 and 5,666.71

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Solution

The fourth proportional to 13,986.62, 20,980.72 and 5,666.71 is: 8,500.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.62 : 20,980.72 = 5,666.71 : x
  2. Step 2: Convert to fraction form
    13,986.62/20,980.72 = 5,666.71/x
  3. Step 3: Cross multiply
    13,986.62x = 20,980.72 × 5,666.71
  4. Step 4: Simplify right side
    13,986.62x = 118,891,649.80
  5. Step 5: Solve for x
    x = 118,891,649.80/13,986.62
  6. Step 6: Final answer
    x = 8,500.38

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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.