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Finding the Fourth Proportional to 18,831, 25,986.76 and 10,333.17

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Solution

The fourth proportional to 18,831, 25,986.76 and 10,333.17 is: 14,259.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831 : 25,986.76 = 10,333.17 : x
  2. Step 2: Convert to fraction form
    18,831/25,986.76 = 10,333.17/x
  3. Step 3: Cross multiply
    18,831x = 25,986.76 × 10,333.17
  4. Step 4: Simplify right side
    18,831x = 268,525,608.83
  5. Step 5: Solve for x
    x = 268,525,608.83/18,831
  6. Step 6: Final answer
    x = 14,259.76

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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.