Home / 12,020.39-18,030.59-7,863.89

Finding the Fourth Proportional to 12,020.39, 18,030.59 and 7,863.89

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Solution

The fourth proportional to 12,020.39, 18,030.59 and 7,863.89 is: 11,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.39 : 18,030.59 = 7,863.89 : x
  2. Step 2: Convert to fraction form
    12,020.39/18,030.59 = 7,863.89/x
  3. Step 3: Cross multiply
    12,020.39x = 18,030.59 × 7,863.89
  4. Step 4: Simplify right side
    12,020.39x = 141,790,446.92
  5. Step 5: Solve for x
    x = 141,790,446.92/12,020.39
  6. Step 6: Final answer
    x = 11,795.83

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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.