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Finding the Fourth Proportional to 25,860.63, 38,780.01 and 8,086.53

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Solution

The fourth proportional to 25,860.63, 38,780.01 and 8,086.53 is: 12,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,860.63 : 38,780.01 = 8,086.53 : x
  2. Step 2: Convert to fraction form
    25,860.63/38,780.01 = 8,086.53/x
  3. Step 3: Cross multiply
    25,860.63x = 38,780.01 × 8,086.53
  4. Step 4: Simplify right side
    25,860.63x = 313,595,714.27
  5. Step 5: Solve for x
    x = 313,595,714.27/25,860.63
  6. Step 6: Final answer
    x = 12,126.38

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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.