Home / 12,429.77-18,640.21-4,108.25

Finding the Fourth Proportional to 12,429.77, 18,640.21 and 4,108.25

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Solution

The fourth proportional to 12,429.77, 18,640.21 and 4,108.25 is: 6,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.77 : 18,640.21 = 4,108.25 : x
  2. Step 2: Convert to fraction form
    12,429.77/18,640.21 = 4,108.25/x
  3. Step 3: Cross multiply
    12,429.77x = 18,640.21 × 4,108.25
  4. Step 4: Simplify right side
    12,429.77x = 76,578,539.26
  5. Step 5: Solve for x
    x = 76,578,539.26/12,429.77
  6. Step 6: Final answer
    x = 6,160.90

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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.