Home / 12,423.34-18,639.03-3,658.30

Finding the Fourth Proportional to 12,423.34, 18,639.03 and 3,658.30

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Solution

The fourth proportional to 12,423.34, 18,639.03 and 3,658.30 is: 5,488.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.34 : 18,639.03 = 3,658.30 : x
  2. Step 2: Convert to fraction form
    12,423.34/18,639.03 = 3,658.30/x
  3. Step 3: Cross multiply
    12,423.34x = 18,639.03 × 3,658.30
  4. Step 4: Simplify right side
    12,423.34x = 68,187,163.45
  5. Step 5: Solve for x
    x = 68,187,163.45/12,423.34
  6. Step 6: Final answer
    x = 5,488.63

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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.