Home / 12,480.79-18,723.98-4,689.67

Finding the Fourth Proportional to 12,480.79, 18,723.98 and 4,689.67

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Solution

The fourth proportional to 12,480.79, 18,723.98 and 4,689.67 is: 7,035.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.79 : 18,723.98 = 4,689.67 : x
  2. Step 2: Convert to fraction form
    12,480.79/18,723.98 = 4,689.67/x
  3. Step 3: Cross multiply
    12,480.79x = 18,723.98 × 4,689.67
  4. Step 4: Simplify right side
    12,480.79x = 87,809,287.29
  5. Step 5: Solve for x
    x = 87,809,287.29/12,480.79
  6. Step 6: Final answer
    x = 7,035.56

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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.