Home / 13,586.67-18,758.76-8,489.97

Finding the Fourth Proportional to 13,586.67, 18,758.76 and 8,489.97

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Solution

The fourth proportional to 13,586.67, 18,758.76 and 8,489.97 is: 11,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.67 : 18,758.76 = 8,489.97 : x
  2. Step 2: Convert to fraction form
    13,586.67/18,758.76 = 8,489.97/x
  3. Step 3: Cross multiply
    13,586.67x = 18,758.76 × 8,489.97
  4. Step 4: Simplify right side
    13,586.67x = 159,261,309.64
  5. Step 5: Solve for x
    x = 159,261,309.64/13,586.67
  6. Step 6: Final answer
    x = 11,721.88

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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.