Home / 10,812.36-16,221.56-3,416.64

Finding the Fourth Proportional to 10,812.36, 16,221.56 and 3,416.64

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Solution

The fourth proportional to 10,812.36, 16,221.56 and 3,416.64 is: 5,125.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.36 : 16,221.56 = 3,416.64 : x
  2. Step 2: Convert to fraction form
    10,812.36/16,221.56 = 3,416.64/x
  3. Step 3: Cross multiply
    10,812.36x = 16,221.56 × 3,416.64
  4. Step 4: Simplify right side
    10,812.36x = 55,423,230.76
  5. Step 5: Solve for x
    x = 55,423,230.76/10,812.36
  6. Step 6: Final answer
    x = 5,125.91

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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.