Home / 12,188.16-18,257.76-5,605.20

Finding the Fourth Proportional to 12,188.16, 18,257.76 and 5,605.20

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Solution

The fourth proportional to 12,188.16, 18,257.76 and 5,605.20 is: 8,396.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.16 : 18,257.76 = 5,605.20 : x
  2. Step 2: Convert to fraction form
    12,188.16/18,257.76 = 5,605.20/x
  3. Step 3: Cross multiply
    12,188.16x = 18,257.76 × 5,605.20
  4. Step 4: Simplify right side
    12,188.16x = 102,338,396.35
  5. Step 5: Solve for x
    x = 102,338,396.35/12,188.16
  6. Step 6: Final answer
    x = 8,396.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.