Home / 13,609.48-18,786.84-8,306.20

Finding the Fourth Proportional to 13,609.48, 18,786.84 and 8,306.20

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Solution

The fourth proportional to 13,609.48, 18,786.84 and 8,306.20 is: 11,466.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.48 : 18,786.84 = 8,306.20 : x
  2. Step 2: Convert to fraction form
    13,609.48/18,786.84 = 8,306.20/x
  3. Step 3: Cross multiply
    13,609.48x = 18,786.84 × 8,306.20
  4. Step 4: Simplify right side
    13,609.48x = 156,047,250.41
  5. Step 5: Solve for x
    x = 156,047,250.41/13,609.48
  6. Step 6: Final answer
    x = 11,466.07

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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.