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Finding the Fourth Proportional to 18,576.71, 25,636.04 and 10,078.80

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Solution

The fourth proportional to 18,576.71, 25,636.04 and 10,078.80 is: 13,908.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,576.71 : 25,636.04 = 10,078.80 : x
  2. Step 2: Convert to fraction form
    18,576.71/25,636.04 = 10,078.80/x
  3. Step 3: Cross multiply
    18,576.71x = 25,636.04 × 10,078.80
  4. Step 4: Simplify right side
    18,576.71x = 258,380,519.95
  5. Step 5: Solve for x
    x = 258,380,519.95/18,576.71
  6. Step 6: Final answer
    x = 13,908.84

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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.