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Finding the Fourth Proportional to 13,871.73, 20,807.70 and 5,552.46

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Solution

The fourth proportional to 13,871.73, 20,807.70 and 5,552.46 is: 8,328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.73 : 20,807.70 = 5,552.46 : x
  2. Step 2: Convert to fraction form
    13,871.73/20,807.70 = 5,552.46/x
  3. Step 3: Cross multiply
    13,871.73x = 20,807.70 × 5,552.46
  4. Step 4: Simplify right side
    13,871.73x = 115,533,921.94
  5. Step 5: Solve for x
    x = 115,533,921.94/13,871.73
  6. Step 6: Final answer
    x = 8,328.73

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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.