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Finding the Fourth Proportional to 26,620.84, 36,717.78 and 18,664.84

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Solution

The fourth proportional to 26,620.84, 36,717.78 and 18,664.84 is: 25,744.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,620.84 : 36,717.78 = 18,664.84 : x
  2. Step 2: Convert to fraction form
    26,620.84/36,717.78 = 18,664.84/x
  3. Step 3: Cross multiply
    26,620.84x = 36,717.78 × 18,664.84
  4. Step 4: Simplify right side
    26,620.84x = 685,331,488.86
  5. Step 5: Solve for x
    x = 685,331,488.86/26,620.84
  6. Step 6: Final answer
    x = 25,744.17

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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.