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Finding the Fourth Proportional to 26,630.30, 39,953.12 and 8,618.13

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Solution

The fourth proportional to 26,630.30, 39,953.12 and 8,618.13 is: 12,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,630.30 : 39,953.12 = 8,618.13 : x
  2. Step 2: Convert to fraction form
    26,630.30/39,953.12 = 8,618.13/x
  3. Step 3: Cross multiply
    26,630.30x = 39,953.12 × 8,618.13
  4. Step 4: Simplify right side
    26,630.30x = 344,321,138.97
  5. Step 5: Solve for x
    x = 344,321,138.97/26,630.30
  6. Step 6: Final answer
    x = 12,929.67

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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.