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Finding the Fourth Proportional to 26,540.84, 36,632.25 and 20,786.84

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Solution

The fourth proportional to 26,540.84, 36,632.25 and 20,786.84 is: 28,690.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,540.84 : 36,632.25 = 20,786.84 : x
  2. Step 2: Convert to fraction form
    26,540.84/36,632.25 = 20,786.84/x
  3. Step 3: Cross multiply
    26,540.84x = 36,632.25 × 20,786.84
  4. Step 4: Simplify right side
    26,540.84x = 761,468,719.59
  5. Step 5: Solve for x
    x = 761,468,719.59/26,540.84
  6. Step 6: Final answer
    x = 28,690.45

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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.