Home / 13,285.38-19,930.23-4,519.38

Finding the Fourth Proportional to 13,285.38, 19,930.23 and 4,519.38

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Solution

The fourth proportional to 13,285.38, 19,930.23 and 4,519.38 is: 6,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.38 : 19,930.23 = 4,519.38 : x
  2. Step 2: Convert to fraction form
    13,285.38/19,930.23 = 4,519.38/x
  3. Step 3: Cross multiply
    13,285.38x = 19,930.23 × 4,519.38
  4. Step 4: Simplify right side
    13,285.38x = 90,072,282.86
  5. Step 5: Solve for x
    x = 90,072,282.86/13,285.38
  6. Step 6: Final answer
    x = 6,779.80

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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.