Home / 12,651.52-18,977.20-4,331.56

Finding the Fourth Proportional to 12,651.52, 18,977.20 and 4,331.56

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Solution

The fourth proportional to 12,651.52, 18,977.20 and 4,331.56 is: 6,497.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.52 : 18,977.20 = 4,331.56 : x
  2. Step 2: Convert to fraction form
    12,651.52/18,977.20 = 4,331.56/x
  3. Step 3: Cross multiply
    12,651.52x = 18,977.20 × 4,331.56
  4. Step 4: Simplify right side
    12,651.52x = 82,200,880.43
  5. Step 5: Solve for x
    x = 82,200,880.43/12,651.52
  6. Step 6: Final answer
    x = 6,497.31

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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.