Home / 12,213.30-18,316.35-4,815.30

Finding the Fourth Proportional to 12,213.30, 18,316.35 and 4,815.30

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Solution

The fourth proportional to 12,213.30, 18,316.35 and 4,815.30 is: 7,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.30 : 18,316.35 = 4,815.30 : x
  2. Step 2: Convert to fraction form
    12,213.30/18,316.35 = 4,815.30/x
  3. Step 3: Cross multiply
    12,213.30x = 18,316.35 × 4,815.30
  4. Step 4: Simplify right side
    12,213.30x = 88,198,720.16
  5. Step 5: Solve for x
    x = 88,198,720.16/12,213.30
  6. Step 6: Final answer
    x = 7,221.53

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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.