Home / 12,021.36-18,035.64-4,228.32

Finding the Fourth Proportional to 12,021.36, 18,035.64 and 4,228.32

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Solution

The fourth proportional to 12,021.36, 18,035.64 and 4,228.32 is: 6,343.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.36 : 18,035.64 = 4,228.32 : x
  2. Step 2: Convert to fraction form
    12,021.36/18,035.64 = 4,228.32/x
  3. Step 3: Cross multiply
    12,021.36x = 18,035.64 × 4,228.32
  4. Step 4: Simplify right side
    12,021.36x = 76,260,457.32
  5. Step 5: Solve for x
    x = 76,260,457.32/12,021.36
  6. Step 6: Final answer
    x = 6,343.75

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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.