Home / 12,609.34-18,908.53-4,287.12

Finding the Fourth Proportional to 12,609.34, 18,908.53 and 4,287.12

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Solution

The fourth proportional to 12,609.34, 18,908.53 and 4,287.12 is: 6,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.34 : 18,908.53 = 4,287.12 : x
  2. Step 2: Convert to fraction form
    12,609.34/18,908.53 = 4,287.12/x
  3. Step 3: Cross multiply
    12,609.34x = 18,908.53 × 4,287.12
  4. Step 4: Simplify right side
    12,609.34x = 81,063,042.59
  5. Step 5: Solve for x
    x = 81,063,042.59/12,609.34
  6. Step 6: Final answer
    x = 6,428.81

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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.