Home / 12,439.13-18,658.76-3,205.13

Finding the Fourth Proportional to 12,439.13, 18,658.76 and 3,205.13

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Solution

The fourth proportional to 12,439.13, 18,658.76 and 3,205.13 is: 4,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.13 : 18,658.76 = 3,205.13 : x
  2. Step 2: Convert to fraction form
    12,439.13/18,658.76 = 3,205.13/x
  3. Step 3: Cross multiply
    12,439.13x = 18,658.76 × 3,205.13
  4. Step 4: Simplify right side
    12,439.13x = 59,803,751.44
  5. Step 5: Solve for x
    x = 59,803,751.44/12,439.13
  6. Step 6: Final answer
    x = 4,807.71

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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.