Home / 13,349.10-18,420.13-7,379.94

Finding the Fourth Proportional to 13,349.10, 18,420.13 and 7,379.94

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Solution

The fourth proportional to 13,349.10, 18,420.13 and 7,379.94 is: 10,183.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.10 : 18,420.13 = 7,379.94 : x
  2. Step 2: Convert to fraction form
    13,349.10/18,420.13 = 7,379.94/x
  3. Step 3: Cross multiply
    13,349.10x = 18,420.13 × 7,379.94
  4. Step 4: Simplify right side
    13,349.10x = 135,939,454.19
  5. Step 5: Solve for x
    x = 135,939,454.19/13,349.10
  6. Step 6: Final answer
    x = 10,183.42

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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.