Home / 12,379.16-18,575.12-8,222.04

Finding the Fourth Proportional to 12,379.16, 18,575.12 and 8,222.04

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Solution

The fourth proportional to 12,379.16, 18,575.12 and 8,222.04 is: 12,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.16 : 18,575.12 = 8,222.04 : x
  2. Step 2: Convert to fraction form
    12,379.16/18,575.12 = 8,222.04/x
  3. Step 3: Cross multiply
    12,379.16x = 18,575.12 × 8,222.04
  4. Step 4: Simplify right side
    12,379.16x = 152,725,338.53
  5. Step 5: Solve for x
    x = 152,725,338.53/12,379.16
  6. Step 6: Final answer
    x = 12,337.30

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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.