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Finding the Fourth Proportional to 18,954.78, 26,157.72 and 10,571.28

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Solution

The fourth proportional to 18,954.78, 26,157.72 and 10,571.28 is: 14,588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.78 : 26,157.72 = 10,571.28 : x
  2. Step 2: Convert to fraction form
    18,954.78/26,157.72 = 10,571.28/x
  3. Step 3: Cross multiply
    18,954.78x = 26,157.72 × 10,571.28
  4. Step 4: Simplify right side
    18,954.78x = 276,520,582.28
  5. Step 5: Solve for x
    x = 276,520,582.28/18,954.78
  6. Step 6: Final answer
    x = 14,588.44

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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.