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Finding the Fourth Proportional to 18,779.60, 25,933.41 and 12,076.87

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Solution

The fourth proportional to 18,779.60, 25,933.41 and 12,076.87 is: 16,677.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.60 : 25,933.41 = 12,076.87 : x
  2. Step 2: Convert to fraction form
    18,779.60/25,933.41 = 12,076.87/x
  3. Step 3: Cross multiply
    18,779.60x = 25,933.41 × 12,076.87
  4. Step 4: Simplify right side
    18,779.60x = 313,194,356.39
  5. Step 5: Solve for x
    x = 313,194,356.39/18,779.60
  6. Step 6: Final answer
    x = 16,677.37

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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.