Home / 12,147.04-18,217.98-3,379.60

Finding the Fourth Proportional to 12,147.04, 18,217.98 and 3,379.60

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Solution

The fourth proportional to 12,147.04, 18,217.98 and 3,379.60 is: 5,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.04 : 18,217.98 = 3,379.60 : x
  2. Step 2: Convert to fraction form
    12,147.04/18,217.98 = 3,379.60/x
  3. Step 3: Cross multiply
    12,147.04x = 18,217.98 × 3,379.60
  4. Step 4: Simplify right side
    12,147.04x = 61,569,485.21
  5. Step 5: Solve for x
    x = 61,569,485.21/12,147.04
  6. Step 6: Final answer
    x = 5,068.68

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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.