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Finding the Fourth Proportional to 18,755.84, 25,883.49 and 10,689.32

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Solution

The fourth proportional to 18,755.84, 25,883.49 and 10,689.32 is: 14,751.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.84 : 25,883.49 = 10,689.32 : x
  2. Step 2: Convert to fraction form
    18,755.84/25,883.49 = 10,689.32/x
  3. Step 3: Cross multiply
    18,755.84x = 25,883.49 × 10,689.32
  4. Step 4: Simplify right side
    18,755.84x = 276,676,777.91
  5. Step 5: Solve for x
    x = 276,676,777.91/18,755.84
  6. Step 6: Final answer
    x = 14,751.50

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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.