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Finding the Fourth Proportional to 19,260.88, 26,580.04 and 10,879

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Solution

The fourth proportional to 19,260.88, 26,580.04 and 10,879 is: 15,013.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,260.88 : 26,580.04 = 10,879 : x
  2. Step 2: Convert to fraction form
    19,260.88/26,580.04 = 10,879/x
  3. Step 3: Cross multiply
    19,260.88x = 26,580.04 × 10,879
  4. Step 4: Simplify right side
    19,260.88x = 289,164,255.16
  5. Step 5: Solve for x
    x = 289,164,255.16/19,260.88
  6. Step 6: Final answer
    x = 15,013.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.