Home / 12,220.72-18,336.32-5,202.28

Finding the Fourth Proportional to 12,220.72, 18,336.32 and 5,202.28

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Solution

The fourth proportional to 12,220.72, 18,336.32 and 5,202.28 is: 7,805.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.72 : 18,336.32 = 5,202.28 : x
  2. Step 2: Convert to fraction form
    12,220.72/18,336.32 = 5,202.28/x
  3. Step 3: Cross multiply
    12,220.72x = 18,336.32 × 5,202.28
  4. Step 4: Simplify right side
    12,220.72x = 95,390,613.35
  5. Step 5: Solve for x
    x = 95,390,613.35/12,220.72
  6. Step 6: Final answer
    x = 7,805.64

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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.