Home / 13,199.08-18,214.72-7,231.12

Finding the Fourth Proportional to 13,199.08, 18,214.72 and 7,231.12

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Solution

The fourth proportional to 13,199.08, 18,214.72 and 7,231.12 is: 9,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.08 : 18,214.72 = 7,231.12 : x
  2. Step 2: Convert to fraction form
    13,199.08/18,214.72 = 7,231.12/x
  3. Step 3: Cross multiply
    13,199.08x = 18,214.72 × 7,231.12
  4. Step 4: Simplify right side
    13,199.08x = 131,712,826.09
  5. Step 5: Solve for x
    x = 131,712,826.09/13,199.08
  6. Step 6: Final answer
    x = 9,978.94

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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.