Home / 13,348.50-18,420.21-7,379.82

Finding the Fourth Proportional to 13,348.50, 18,420.21 and 7,379.82

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Solution

The fourth proportional to 13,348.50, 18,420.21 and 7,379.82 is: 10,183.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.50 : 18,420.21 = 7,379.82 : x
  2. Step 2: Convert to fraction form
    13,348.50/18,420.21 = 7,379.82/x
  3. Step 3: Cross multiply
    13,348.50x = 18,420.21 × 7,379.82
  4. Step 4: Simplify right side
    13,348.50x = 135,937,834.16
  5. Step 5: Solve for x
    x = 135,937,834.16/13,348.50
  6. Step 6: Final answer
    x = 10,183.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.