Home / 19,212.20-28,850.70-12,667.40

Finding the Fourth Proportional to 19,212.20, 28,850.70 and 12,667.40

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Solution

The fourth proportional to 19,212.20, 28,850.70 and 12,667.40 is: 19,022.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,212.20 : 28,850.70 = 12,667.40 : x
  2. Step 2: Convert to fraction form
    19,212.20/28,850.70 = 12,667.40/x
  3. Step 3: Cross multiply
    19,212.20x = 28,850.70 × 12,667.40
  4. Step 4: Simplify right side
    19,212.20x = 365,463,357.18
  5. Step 5: Solve for x
    x = 365,463,357.18/19,212.20
  6. Step 6: Final answer
    x = 19,022.46

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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.