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Finding the Fourth Proportional to 12,668.18, 17,484.48 and 8,353.67

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Solution

The fourth proportional to 12,668.18, 17,484.48 and 8,353.67 is: 11,529.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.18 : 17,484.48 = 8,353.67 : x
  2. Step 2: Convert to fraction form
    12,668.18/17,484.48 = 8,353.67/x
  3. Step 3: Cross multiply
    12,668.18x = 17,484.48 × 8,353.67
  4. Step 4: Simplify right side
    12,668.18x = 146,059,488.62
  5. Step 5: Solve for x
    x = 146,059,488.62/12,668.18
  6. Step 6: Final answer
    x = 11,529.64

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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.