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Finding the Fourth Proportional to 8,668.30, 13,002.45 and 8,328.10

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Solution

The fourth proportional to 8,668.30, 13,002.45 and 8,328.10 is: 12,492.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.30 : 13,002.45 = 8,328.10 : x
  2. Step 2: Convert to fraction form
    8,668.30/13,002.45 = 8,328.10/x
  3. Step 3: Cross multiply
    8,668.30x = 13,002.45 × 8,328.10
  4. Step 4: Simplify right side
    8,668.30x = 108,285,703.85
  5. Step 5: Solve for x
    x = 108,285,703.85/8,668.30
  6. Step 6: Final answer
    x = 12,492.15

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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.