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Finding the Fourth Proportional to 13,995.01, 20,992.19 and 5,672.80

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Solution

The fourth proportional to 13,995.01, 20,992.19 and 5,672.80 is: 8,509.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.01 : 20,992.19 = 5,672.80 : x
  2. Step 2: Convert to fraction form
    13,995.01/20,992.19 = 5,672.80/x
  3. Step 3: Cross multiply
    13,995.01x = 20,992.19 × 5,672.80
  4. Step 4: Simplify right side
    13,995.01x = 119,084,414.59
  5. Step 5: Solve for x
    x = 119,084,414.59/13,995.01
  6. Step 6: Final answer
    x = 8,509.06

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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.