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Finding the Fourth Proportional to 28,201.46, 38,918.02 and 16,871.43

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Solution

The fourth proportional to 28,201.46, 38,918.02 and 16,871.43 is: 23,282.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.46 : 38,918.02 = 16,871.43 : x
  2. Step 2: Convert to fraction form
    28,201.46/38,918.02 = 16,871.43/x
  3. Step 3: Cross multiply
    28,201.46x = 38,918.02 × 16,871.43
  4. Step 4: Simplify right side
    28,201.46x = 656,602,607.99
  5. Step 5: Solve for x
    x = 656,602,607.99/28,201.46
  6. Step 6: Final answer
    x = 23,282.57

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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.