Home / 12,091.73-18,158.04-7,421.09

Finding the Fourth Proportional to 12,091.73, 18,158.04 and 7,421.09

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Solution

The fourth proportional to 12,091.73, 18,158.04 and 7,421.09 is: 11,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.73 : 18,158.04 = 7,421.09 : x
  2. Step 2: Convert to fraction form
    12,091.73/18,158.04 = 7,421.09/x
  3. Step 3: Cross multiply
    12,091.73x = 18,158.04 × 7,421.09
  4. Step 4: Simplify right side
    12,091.73x = 134,752,358.27
  5. Step 5: Solve for x
    x = 134,752,358.27/12,091.73
  6. Step 6: Final answer
    x = 11,144.18

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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.