Home / 13,319.10-18,379.31-7,350.75

Finding the Fourth Proportional to 13,319.10, 18,379.31 and 7,350.75

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Solution

The fourth proportional to 13,319.10, 18,379.31 and 7,350.75 is: 10,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.10 : 18,379.31 = 7,350.75 : x
  2. Step 2: Convert to fraction form
    13,319.10/18,379.31 = 7,350.75/x
  3. Step 3: Cross multiply
    13,319.10x = 18,379.31 × 7,350.75
  4. Step 4: Simplify right side
    13,319.10x = 135,101,676.23
  5. Step 5: Solve for x
    x = 135,101,676.23/13,319.10
  6. Step 6: Final answer
    x = 10,143.45

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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.