Home / 13,181.88-18,192.66-7,518.62

Finding the Fourth Proportional to 13,181.88, 18,192.66 and 7,518.62

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Solution

The fourth proportional to 13,181.88, 18,192.66 and 7,518.62 is: 10,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.88 : 18,192.66 = 7,518.62 : x
  2. Step 2: Convert to fraction form
    13,181.88/18,192.66 = 7,518.62/x
  3. Step 3: Cross multiply
    13,181.88x = 18,192.66 × 7,518.62
  4. Step 4: Simplify right side
    13,181.88x = 136,783,697.33
  5. Step 5: Solve for x
    x = 136,783,697.33/13,181.88
  6. Step 6: Final answer
    x = 10,376.65

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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.