Home / 20,975.61-28,939.25-14,249.52

Finding the Fourth Proportional to 20,975.61, 28,939.25 and 14,249.52

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Solution

The fourth proportional to 20,975.61, 28,939.25 and 14,249.52 is: 19,659.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.61 : 28,939.25 = 14,249.52 : x
  2. Step 2: Convert to fraction form
    20,975.61/28,939.25 = 14,249.52/x
  3. Step 3: Cross multiply
    20,975.61x = 28,939.25 × 14,249.52
  4. Step 4: Simplify right side
    20,975.61x = 412,370,417.21
  5. Step 5: Solve for x
    x = 412,370,417.21/20,975.61
  6. Step 6: Final answer
    x = 19,659.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.