Home / 13,319.62-18,382.77-8,017.30

Finding the Fourth Proportional to 13,319.62, 18,382.77 and 8,017.30

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Solution

The fourth proportional to 13,319.62, 18,382.77 and 8,017.30 is: 11,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.62 : 18,382.77 = 8,017.30 : x
  2. Step 2: Convert to fraction form
    13,319.62/18,382.77 = 8,017.30/x
  3. Step 3: Cross multiply
    13,319.62x = 18,382.77 × 8,017.30
  4. Step 4: Simplify right side
    13,319.62x = 147,380,181.92
  5. Step 5: Solve for x
    x = 147,380,181.92/13,319.62
  6. Step 6: Final answer
    x = 11,064.89

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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.