Home / 19,245-28,784.11-11,328.65

Finding the Fourth Proportional to 19,245, 28,784.11 and 11,328.65

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Solution

The fourth proportional to 19,245, 28,784.11 and 11,328.65 is: 16,943.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,245 : 28,784.11 = 11,328.65 : x
  2. Step 2: Convert to fraction form
    19,245/28,784.11 = 11,328.65/x
  3. Step 3: Cross multiply
    19,245x = 28,784.11 × 11,328.65
  4. Step 4: Simplify right side
    19,245x = 326,085,107.75
  5. Step 5: Solve for x
    x = 326,085,107.75/19,245
  6. Step 6: Final answer
    x = 16,943.89

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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.