Home / 31,021.72-46,514.90-21,172.92

Finding the Fourth Proportional to 31,021.72, 46,514.90 and 21,172.92

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Solution

The fourth proportional to 31,021.72, 46,514.90 and 21,172.92 is: 31,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,021.72 : 46,514.90 = 21,172.92 : x
  2. Step 2: Convert to fraction form
    31,021.72/46,514.90 = 21,172.92/x
  3. Step 3: Cross multiply
    31,021.72x = 46,514.90 × 21,172.92
  4. Step 4: Simplify right side
    31,021.72x = 984,856,256.51
  5. Step 5: Solve for x
    x = 984,856,256.51/31,021.72
  6. Step 6: Final answer
    x = 31,747.31

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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.