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Finding the Fourth Proportional to 13,871.95, 20,808.97 and 4,011.30

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Solution

The fourth proportional to 13,871.95, 20,808.97 and 4,011.30 is: 6,017.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.95 : 20,808.97 = 4,011.30 : x
  2. Step 2: Convert to fraction form
    13,871.95/20,808.97 = 4,011.30/x
  3. Step 3: Cross multiply
    13,871.95x = 20,808.97 × 4,011.30
  4. Step 4: Simplify right side
    13,871.95x = 83,471,011.33
  5. Step 5: Solve for x
    x = 83,471,011.33/13,871.95
  6. Step 6: Final answer
    x = 6,017.25

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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.