Home / 13,486.77-18,608.58-8,181.45

Finding the Fourth Proportional to 13,486.77, 18,608.58 and 8,181.45

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Solution

The fourth proportional to 13,486.77, 18,608.58 and 8,181.45 is: 11,288.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.77 : 18,608.58 = 8,181.45 : x
  2. Step 2: Convert to fraction form
    13,486.77/18,608.58 = 8,181.45/x
  3. Step 3: Cross multiply
    13,486.77x = 18,608.58 × 8,181.45
  4. Step 4: Simplify right side
    13,486.77x = 152,245,166.84
  5. Step 5: Solve for x
    x = 152,245,166.84/13,486.77
  6. Step 6: Final answer
    x = 11,288.48

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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.