Home / 19,119.96-28,665.96-12,864.42

Finding the Fourth Proportional to 19,119.96, 28,665.96 and 12,864.42

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Solution

The fourth proportional to 19,119.96, 28,665.96 and 12,864.42 is: 19,287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.96 : 28,665.96 = 12,864.42 : x
  2. Step 2: Convert to fraction form
    19,119.96/28,665.96 = 12,864.42/x
  3. Step 3: Cross multiply
    19,119.96x = 28,665.96 × 12,864.42
  4. Step 4: Simplify right side
    19,119.96x = 368,770,949.14
  5. Step 5: Solve for x
    x = 368,770,949.14/19,119.96
  6. Step 6: Final answer
    x = 19,287.22

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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.