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Finding the Fourth Proportional to 18,704.90, 25,814.22 and 10,749.90

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Solution

The fourth proportional to 18,704.90, 25,814.22 and 10,749.90 is: 14,835.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.90 : 25,814.22 = 10,749.90 : x
  2. Step 2: Convert to fraction form
    18,704.90/25,814.22 = 10,749.90/x
  3. Step 3: Cross multiply
    18,704.90x = 25,814.22 × 10,749.90
  4. Step 4: Simplify right side
    18,704.90x = 277,500,283.58
  5. Step 5: Solve for x
    x = 277,500,283.58/18,704.90
  6. Step 6: Final answer
    x = 14,835.70

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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.