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Finding the Fourth Proportional to 13,871.40, 20,807.08 and 3,483.16

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Solution

The fourth proportional to 13,871.40, 20,807.08 and 3,483.16 is: 5,224.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.40 : 20,807.08 = 3,483.16 : x
  2. Step 2: Convert to fraction form
    13,871.40/20,807.08 = 3,483.16/x
  3. Step 3: Cross multiply
    13,871.40x = 20,807.08 × 3,483.16
  4. Step 4: Simplify right side
    13,871.40x = 72,474,388.77
  5. Step 5: Solve for x
    x = 72,474,388.77/13,871.40
  6. Step 6: Final answer
    x = 5,224.73

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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.