Home / 20,292.06-28,004.53-11,680.86

Finding the Fourth Proportional to 20,292.06, 28,004.53 and 11,680.86

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Solution

The fourth proportional to 20,292.06, 28,004.53 and 11,680.86 is: 16,120.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.06 : 28,004.53 = 11,680.86 : x
  2. Step 2: Convert to fraction form
    20,292.06/28,004.53 = 11,680.86/x
  3. Step 3: Cross multiply
    20,292.06x = 28,004.53 × 11,680.86
  4. Step 4: Simplify right side
    20,292.06x = 327,116,994.30
  5. Step 5: Solve for x
    x = 327,116,994.30/20,292.06
  6. Step 6: Final answer
    x = 16,120.44

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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.