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Finding the Fourth Proportional to 13,871.41, 20,807.02 and 5,553.35

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Solution

The fourth proportional to 13,871.41, 20,807.02 and 5,553.35 is: 8,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.41 : 20,807.02 = 5,553.35 : x
  2. Step 2: Convert to fraction form
    13,871.41/20,807.02 = 5,553.35/x
  3. Step 3: Cross multiply
    13,871.41x = 20,807.02 × 5,553.35
  4. Step 4: Simplify right side
    13,871.41x = 115,548,546.60
  5. Step 5: Solve for x
    x = 115,548,546.60/13,871.41
  6. Step 6: Final answer
    x = 8,329.98

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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.