Home / 19,119.96-28,680.12-5,972.40

Finding the Fourth Proportional to 19,119.96, 28,680.12 and 5,972.40

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Solution

The fourth proportional to 19,119.96, 28,680.12 and 5,972.40 is: 8,958.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.96 : 28,680.12 = 5,972.40 : x
  2. Step 2: Convert to fraction form
    19,119.96/28,680.12 = 5,972.40/x
  3. Step 3: Cross multiply
    19,119.96x = 28,680.12 × 5,972.40
  4. Step 4: Simplify right side
    19,119.96x = 171,289,148.69
  5. Step 5: Solve for x
    x = 171,289,148.69/19,119.96
  6. Step 6: Final answer
    x = 8,958.66

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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.