Home / 19,218.70-28,825.65-5,179.82

Finding the Fourth Proportional to 19,218.70, 28,825.65 and 5,179.82

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Solution

The fourth proportional to 19,218.70, 28,825.65 and 5,179.82 is: 7,769.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.70 : 28,825.65 = 5,179.82 : x
  2. Step 2: Convert to fraction form
    19,218.70/28,825.65 = 5,179.82/x
  3. Step 3: Cross multiply
    19,218.70x = 28,825.65 × 5,179.82
  4. Step 4: Simplify right side
    19,218.70x = 149,311,678.38
  5. Step 5: Solve for x
    x = 149,311,678.38/19,218.70
  6. Step 6: Final answer
    x = 7,769.09

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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.