Home / 20,999.83-31,499.82-14,406.03

Finding the Fourth Proportional to 20,999.83, 31,499.82 and 14,406.03

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Solution

The fourth proportional to 20,999.83, 31,499.82 and 14,406.03 is: 21,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.83 : 31,499.82 = 14,406.03 : x
  2. Step 2: Convert to fraction form
    20,999.83/31,499.82 = 14,406.03/x
  3. Step 3: Cross multiply
    20,999.83x = 31,499.82 × 14,406.03
  4. Step 4: Simplify right side
    20,999.83x = 453,787,351.91
  5. Step 5: Solve for x
    x = 453,787,351.91/20,999.83
  6. Step 6: Final answer
    x = 21,609.10

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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.