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Finding the Fourth Proportional to 20,062.94, 30,079.76 and 12,277.22

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Solution

The fourth proportional to 20,062.94, 30,079.76 and 12,277.22 is: 18,406.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,062.94 : 30,079.76 = 12,277.22 : x
  2. Step 2: Convert to fraction form
    20,062.94/30,079.76 = 12,277.22/x
  3. Step 3: Cross multiply
    20,062.94x = 30,079.76 × 12,277.22
  4. Step 4: Simplify right side
    20,062.94x = 369,295,619.28
  5. Step 5: Solve for x
    x = 369,295,619.28/20,062.94
  6. Step 6: Final answer
    x = 18,406.86

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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.