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Finding the Fourth Proportional to 15,468.86, 21,348 and 8,751.93

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Solution

The fourth proportional to 15,468.86, 21,348 and 8,751.93 is: 12,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,468.86 : 21,348 = 8,751.93 : x
  2. Step 2: Convert to fraction form
    15,468.86/21,348 = 8,751.93/x
  3. Step 3: Cross multiply
    15,468.86x = 21,348 × 8,751.93
  4. Step 4: Simplify right side
    15,468.86x = 186,836,201.64
  5. Step 5: Solve for x
    x = 186,836,201.64/15,468.86
  6. Step 6: Final answer
    x = 12,078.21

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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.