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Finding the Fourth Proportional to 19,040.13, 28,573.16 and 11,448

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Solution

The fourth proportional to 19,040.13, 28,573.16 and 11,448 is: 17,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,040.13 : 28,573.16 = 11,448 : x
  2. Step 2: Convert to fraction form
    19,040.13/28,573.16 = 11,448/x
  3. Step 3: Cross multiply
    19,040.13x = 28,573.16 × 11,448
  4. Step 4: Simplify right side
    19,040.13x = 327,105,535.68
  5. Step 5: Solve for x
    x = 327,105,535.68/19,040.13
  6. Step 6: Final answer
    x = 17,179.80

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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.