Home / 12,100.09-18,146.80-8,579.70

Finding the Fourth Proportional to 12,100.09, 18,146.80 and 8,579.70

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Solution

The fourth proportional to 12,100.09, 18,146.80 and 8,579.70 is: 12,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.09 : 18,146.80 = 8,579.70 : x
  2. Step 2: Convert to fraction form
    12,100.09/18,146.80 = 8,579.70/x
  3. Step 3: Cross multiply
    12,100.09x = 18,146.80 × 8,579.70
  4. Step 4: Simplify right side
    12,100.09x = 155,694,192.58
  5. Step 5: Solve for x
    x = 155,694,192.58/12,100.09
  6. Step 6: Final answer
    x = 12,867.19

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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.