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Finding the Fourth Proportional to 18,517, 25,553.46 and 10,133.50

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Solution

The fourth proportional to 18,517, 25,553.46 and 10,133.50 is: 13,984.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517 : 25,553.46 = 10,133.50 : x
  2. Step 2: Convert to fraction form
    18,517/25,553.46 = 10,133.50/x
  3. Step 3: Cross multiply
    18,517x = 25,553.46 × 10,133.50
  4. Step 4: Simplify right side
    18,517x = 258,945,986.91
  5. Step 5: Solve for x
    x = 258,945,986.91/18,517
  6. Step 6: Final answer
    x = 13,984.23

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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.