Home / 12,083.10-18,128.07-4,292.70

Finding the Fourth Proportional to 12,083.10, 18,128.07 and 4,292.70

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Solution

The fourth proportional to 12,083.10, 18,128.07 and 4,292.70 is: 6,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083.10 : 18,128.07 = 4,292.70 : x
  2. Step 2: Convert to fraction form
    12,083.10/18,128.07 = 4,292.70/x
  3. Step 3: Cross multiply
    12,083.10x = 18,128.07 × 4,292.70
  4. Step 4: Simplify right side
    12,083.10x = 77,818,366.09
  5. Step 5: Solve for x
    x = 77,818,366.09/12,083.10
  6. Step 6: Final answer
    x = 6,440.27

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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.