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Finding the Fourth Proportional to 18,771.85, 25,894.77 and 12,058.47

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Solution

The fourth proportional to 18,771.85, 25,894.77 and 12,058.47 is: 16,634.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.85 : 25,894.77 = 12,058.47 : x
  2. Step 2: Convert to fraction form
    18,771.85/25,894.77 = 12,058.47/x
  3. Step 3: Cross multiply
    18,771.85x = 25,894.77 × 12,058.47
  4. Step 4: Simplify right side
    18,771.85x = 312,251,177.73
  5. Step 5: Solve for x
    x = 312,251,177.73/18,771.85
  6. Step 6: Final answer
    x = 16,634.02

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1.5x scale

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.