Home / 12,339.48-18,513.30-4,942.20

Finding the Fourth Proportional to 12,339.48, 18,513.30 and 4,942.20

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Solution

The fourth proportional to 12,339.48, 18,513.30 and 4,942.20 is: 7,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.48 : 18,513.30 = 4,942.20 : x
  2. Step 2: Convert to fraction form
    12,339.48/18,513.30 = 4,942.20/x
  3. Step 3: Cross multiply
    12,339.48x = 18,513.30 × 4,942.20
  4. Step 4: Simplify right side
    12,339.48x = 91,496,431.26
  5. Step 5: Solve for x
    x = 91,496,431.26/12,339.48
  6. Step 6: Final answer
    x = 7,414.93

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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.