Home / 14,221.28-21,332.16-5,456.64

Finding the Fourth Proportional to 14,221.28, 21,332.16 and 5,456.64

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Solution

The fourth proportional to 14,221.28, 21,332.16 and 5,456.64 is: 8,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.28 : 21,332.16 = 5,456.64 : x
  2. Step 2: Convert to fraction form
    14,221.28/21,332.16 = 5,456.64/x
  3. Step 3: Cross multiply
    14,221.28x = 21,332.16 × 5,456.64
  4. Step 4: Simplify right side
    14,221.28x = 116,401,917.54
  5. Step 5: Solve for x
    x = 116,401,917.54/14,221.28
  6. Step 6: Final answer
    x = 8,185.05

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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.