Home / 14,108.60-21,144.34-7,871.55

Finding the Fourth Proportional to 14,108.60, 21,144.34 and 7,871.55

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Solution

The fourth proportional to 14,108.60, 21,144.34 and 7,871.55 is: 11,796.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,108.60 : 21,144.34 = 7,871.55 : x
  2. Step 2: Convert to fraction form
    14,108.60/21,144.34 = 7,871.55/x
  3. Step 3: Cross multiply
    14,108.60x = 21,144.34 × 7,871.55
  4. Step 4: Simplify right side
    14,108.60x = 166,438,743.03
  5. Step 5: Solve for x
    x = 166,438,743.03/14,108.60
  6. Step 6: Final answer
    x = 11,796.97

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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.