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Finding the Fourth Proportional to 18,954.80, 26,157.52 and 10,571.28

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Solution

The fourth proportional to 18,954.80, 26,157.52 and 10,571.28 is: 14,588.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.80 : 26,157.52 = 10,571.28 : x
  2. Step 2: Convert to fraction form
    18,954.80/26,157.52 = 10,571.28/x
  3. Step 3: Cross multiply
    18,954.80x = 26,157.52 × 10,571.28
  4. Step 4: Simplify right side
    18,954.80x = 276,518,468.03
  5. Step 5: Solve for x
    x = 276,518,468.03/18,954.80
  6. Step 6: Final answer
    x = 14,588.31

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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.