Home / 12,625.20-18,937.80-7,704.45

Finding the Fourth Proportional to 12,625.20, 18,937.80 and 7,704.45

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Solution

The fourth proportional to 12,625.20, 18,937.80 and 7,704.45 is: 11,556.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.20 : 18,937.80 = 7,704.45 : x
  2. Step 2: Convert to fraction form
    12,625.20/18,937.80 = 7,704.45/x
  3. Step 3: Cross multiply
    12,625.20x = 18,937.80 × 7,704.45
  4. Step 4: Simplify right side
    12,625.20x = 145,905,333.21
  5. Step 5: Solve for x
    x = 145,905,333.21/12,625.20
  6. Step 6: Final answer
    x = 11,556.68

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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.