Home / 20,954.09-28,941.40-16,139.86

Finding the Fourth Proportional to 20,954.09, 28,941.40 and 16,139.86

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Solution

The fourth proportional to 20,954.09, 28,941.40 and 16,139.86 is: 22,292.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.09 : 28,941.40 = 16,139.86 : x
  2. Step 2: Convert to fraction form
    20,954.09/28,941.40 = 16,139.86/x
  3. Step 3: Cross multiply
    20,954.09x = 28,941.40 × 16,139.86
  4. Step 4: Simplify right side
    20,954.09x = 467,110,092.03
  5. Step 5: Solve for x
    x = 467,110,092.03/20,954.09
  6. Step 6: Final answer
    x = 22,292.07

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1.5x scale

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.