Home / 14,221.55-21,335.34-5,456.45

Finding the Fourth Proportional to 14,221.55, 21,335.34 and 5,456.45

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Solution

The fourth proportional to 14,221.55, 21,335.34 and 5,456.45 is: 8,185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.55 : 21,335.34 = 5,456.45 : x
  2. Step 2: Convert to fraction form
    14,221.55/21,335.34 = 5,456.45/x
  3. Step 3: Cross multiply
    14,221.55x = 21,335.34 × 5,456.45
  4. Step 4: Simplify right side
    14,221.55x = 116,415,215.94
  5. Step 5: Solve for x
    x = 116,415,215.94/14,221.55
  6. Step 6: Final answer
    x = 8,185.83

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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.