Home / 21,107.80-31,661.70-14,514.04

Finding the Fourth Proportional to 21,107.80, 31,661.70 and 14,514.04

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Solution

The fourth proportional to 21,107.80, 31,661.70 and 14,514.04 is: 21,771.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.80 : 31,661.70 = 14,514.04 : x
  2. Step 2: Convert to fraction form
    21,107.80/31,661.70 = 14,514.04/x
  3. Step 3: Cross multiply
    21,107.80x = 31,661.70 × 14,514.04
  4. Step 4: Simplify right side
    21,107.80x = 459,539,180.27
  5. Step 5: Solve for x
    x = 459,539,180.27/21,107.80
  6. Step 6: Final answer
    x = 21,771.06

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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.