Home / 30,790.68-46,124.96-21,279.97

Finding the Fourth Proportional to 30,790.68, 46,124.96 and 21,279.97

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Solution

The fourth proportional to 30,790.68, 46,124.96 and 21,279.97 is: 31,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.68 : 46,124.96 = 21,279.97 : x
  2. Step 2: Convert to fraction form
    30,790.68/46,124.96 = 21,279.97/x
  3. Step 3: Cross multiply
    30,790.68x = 46,124.96 × 21,279.97
  4. Step 4: Simplify right side
    30,790.68x = 981,537,702.94
  5. Step 5: Solve for x
    x = 981,537,702.94/30,790.68
  6. Step 6: Final answer
    x = 31,877.75

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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.