Home / 12,628.48-18,945.60-3,864.16

Finding the Fourth Proportional to 12,628.48, 18,945.60 and 3,864.16

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Solution

The fourth proportional to 12,628.48, 18,945.60 and 3,864.16 is: 5,797.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.48 : 18,945.60 = 3,864.16 : x
  2. Step 2: Convert to fraction form
    12,628.48/18,945.60 = 3,864.16/x
  3. Step 3: Cross multiply
    12,628.48x = 18,945.60 × 3,864.16
  4. Step 4: Simplify right side
    12,628.48x = 73,208,829.70
  5. Step 5: Solve for x
    x = 73,208,829.70/12,628.48
  6. Step 6: Final answer
    x = 5,797.12

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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.