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Finding the Fourth Proportional to 18,957.27, 28,435.92 and 5,106.27

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Solution

The fourth proportional to 18,957.27, 28,435.92 and 5,106.27 is: 7,659.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.27 : 28,435.92 = 5,106.27 : x
  2. Step 2: Convert to fraction form
    18,957.27/28,435.92 = 5,106.27/x
  3. Step 3: Cross multiply
    18,957.27x = 28,435.92 × 5,106.27
  4. Step 4: Simplify right side
    18,957.27x = 145,201,485.22
  5. Step 5: Solve for x
    x = 145,201,485.22/18,957.27
  6. Step 6: Final answer
    x = 7,659.41

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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.