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Finding the Fourth Proportional to 18,704.20, 25,828.32 and 11,642.62

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Solution

The fourth proportional to 18,704.20, 25,828.32 and 11,642.62 is: 16,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.20 : 25,828.32 = 11,642.62 : x
  2. Step 2: Convert to fraction form
    18,704.20/25,828.32 = 11,642.62/x
  3. Step 3: Cross multiply
    18,704.20x = 25,828.32 × 11,642.62
  4. Step 4: Simplify right side
    18,704.20x = 300,709,315.00
  5. Step 5: Solve for x
    x = 300,709,315.00/18,704.20
  6. Step 6: Final answer
    x = 16,077.10

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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.