Home / 18,999.45-28,499.67-6,519.42

Finding the Fourth Proportional to 18,999.45, 28,499.67 and 6,519.42

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Solution

The fourth proportional to 18,999.45, 28,499.67 and 6,519.42 is: 9,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.45 : 28,499.67 = 6,519.42 : x
  2. Step 2: Convert to fraction form
    18,999.45/28,499.67 = 6,519.42/x
  3. Step 3: Cross multiply
    18,999.45x = 28,499.67 × 6,519.42
  4. Step 4: Simplify right side
    18,999.45x = 185,801,318.59
  5. Step 5: Solve for x
    x = 185,801,318.59/18,999.45
  6. Step 6: Final answer
    x = 9,779.30

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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.