Home / 13,766.43-18,991.47-8,459.31

Finding the Fourth Proportional to 13,766.43, 18,991.47 and 8,459.31

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Solution

The fourth proportional to 13,766.43, 18,991.47 and 8,459.31 is: 11,670.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,766.43 : 18,991.47 = 8,459.31 : x
  2. Step 2: Convert to fraction form
    13,766.43/18,991.47 = 8,459.31/x
  3. Step 3: Cross multiply
    13,766.43x = 18,991.47 × 8,459.31
  4. Step 4: Simplify right side
    13,766.43x = 160,654,732.09
  5. Step 5: Solve for x
    x = 160,654,732.09/13,766.43
  6. Step 6: Final answer
    x = 11,670.04

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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.