Home / 12,638.67-18,960.23-4,316.74

Finding the Fourth Proportional to 12,638.67, 18,960.23 and 4,316.74

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Solution

The fourth proportional to 12,638.67, 18,960.23 and 4,316.74 is: 6,475.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.67 : 18,960.23 = 4,316.74 : x
  2. Step 2: Convert to fraction form
    12,638.67/18,960.23 = 4,316.74/x
  3. Step 3: Cross multiply
    12,638.67x = 18,960.23 × 4,316.74
  4. Step 4: Simplify right side
    12,638.67x = 81,846,346.64
  5. Step 5: Solve for x
    x = 81,846,346.64/12,638.67
  6. Step 6: Final answer
    x = 6,475.87

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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.