Home / 12,316.85-18,478.19-3,996.87

Finding the Fourth Proportional to 12,316.85, 18,478.19 and 3,996.87

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Solution

The fourth proportional to 12,316.85, 18,478.19 and 3,996.87 is: 5,996.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,316.85 : 18,478.19 = 3,996.87 : x
  2. Step 2: Convert to fraction form
    12,316.85/18,478.19 = 3,996.87/x
  3. Step 3: Cross multiply
    12,316.85x = 18,478.19 × 3,996.87
  4. Step 4: Simplify right side
    12,316.85x = 73,854,923.27
  5. Step 5: Solve for x
    x = 73,854,923.27/12,316.85
  6. Step 6: Final answer
    x = 5,996.25

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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.