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Finding the Fourth Proportional to 25,566.80, 38,299.14 and 20,310.68

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Solution

The fourth proportional to 25,566.80, 38,299.14 and 20,310.68 is: 30,425.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,566.80 : 38,299.14 = 20,310.68 : x
  2. Step 2: Convert to fraction form
    25,566.80/38,299.14 = 20,310.68/x
  3. Step 3: Cross multiply
    25,566.80x = 38,299.14 × 20,310.68
  4. Step 4: Simplify right side
    25,566.80x = 777,881,576.82
  5. Step 5: Solve for x
    x = 777,881,576.82/25,566.80
  6. Step 6: Final answer
    x = 30,425.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.