Home / 12,485.54-18,731.10-4,694.42

Finding the Fourth Proportional to 12,485.54, 18,731.10 and 4,694.42

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Solution

The fourth proportional to 12,485.54, 18,731.10 and 4,694.42 is: 7,042.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.54 : 18,731.10 = 4,694.42 : x
  2. Step 2: Convert to fraction form
    12,485.54/18,731.10 = 4,694.42/x
  3. Step 3: Cross multiply
    12,485.54x = 18,731.10 × 4,694.42
  4. Step 4: Simplify right side
    12,485.54x = 87,931,650.46
  5. Step 5: Solve for x
    x = 87,931,650.46/12,485.54
  6. Step 6: Final answer
    x = 7,042.68

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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.