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Finding the Fourth Proportional to 18,708.60, 25,822.30 and 10,755.45

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Solution

The fourth proportional to 18,708.60, 25,822.30 and 10,755.45 is: 14,845.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.60 : 25,822.30 = 10,755.45 : x
  2. Step 2: Convert to fraction form
    18,708.60/25,822.30 = 10,755.45/x
  3. Step 3: Cross multiply
    18,708.60x = 25,822.30 × 10,755.45
  4. Step 4: Simplify right side
    18,708.60x = 277,730,418.87
  5. Step 5: Solve for x
    x = 277,730,418.87/18,708.60
  6. Step 6: Final answer
    x = 14,845.07

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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.