Home / 12,128.77-18,193.24-4,231.25

Finding the Fourth Proportional to 12,128.77, 18,193.24 and 4,231.25

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Solution

The fourth proportional to 12,128.77, 18,193.24 and 4,231.25 is: 6,346.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.77 : 18,193.24 = 4,231.25 : x
  2. Step 2: Convert to fraction form
    12,128.77/18,193.24 = 4,231.25/x
  3. Step 3: Cross multiply
    12,128.77x = 18,193.24 × 4,231.25
  4. Step 4: Simplify right side
    12,128.77x = 76,980,207.83
  5. Step 5: Solve for x
    x = 76,980,207.83/12,128.77
  6. Step 6: Final answer
    x = 6,346.91

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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.