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Finding the Fourth Proportional to 18,806.70, 25,953.84 and 10,309.41

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Solution

The fourth proportional to 18,806.70, 25,953.84 and 10,309.41 is: 14,227.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.70 : 25,953.84 = 10,309.41 : x
  2. Step 2: Convert to fraction form
    18,806.70/25,953.84 = 10,309.41/x
  3. Step 3: Cross multiply
    18,806.70x = 25,953.84 × 10,309.41
  4. Step 4: Simplify right side
    18,806.70x = 267,568,777.63
  5. Step 5: Solve for x
    x = 267,568,777.63/18,806.70
  6. Step 6: Final answer
    x = 14,227.31

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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.