Home / 12,313.68-18,470.61-4,920

Finding the Fourth Proportional to 12,313.68, 18,470.61 and 4,920

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Solution

The fourth proportional to 12,313.68, 18,470.61 and 4,920 is: 7,380.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.68 : 18,470.61 = 4,920 : x
  2. Step 2: Convert to fraction form
    12,313.68/18,470.61 = 4,920/x
  3. Step 3: Cross multiply
    12,313.68x = 18,470.61 × 4,920
  4. Step 4: Simplify right side
    12,313.68x = 90,875,401.20
  5. Step 5: Solve for x
    x = 90,875,401.20/12,313.68
  6. Step 6: Final answer
    x = 7,380.04

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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.