Home / 28,004.72-41,992.52-13,209.68

Finding the Fourth Proportional to 28,004.72, 41,992.52 and 13,209.68

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Solution

The fourth proportional to 28,004.72, 41,992.52 and 13,209.68 is: 19,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.72 : 41,992.52 = 13,209.68 : x
  2. Step 2: Convert to fraction form
    28,004.72/41,992.52 = 13,209.68/x
  3. Step 3: Cross multiply
    28,004.72x = 41,992.52 × 13,209.68
  4. Step 4: Simplify right side
    28,004.72x = 554,707,751.59
  5. Step 5: Solve for x
    x = 554,707,751.59/28,004.72
  6. Step 6: Final answer
    x = 19,807.65

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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.