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Finding the Fourth Proportional to 8,995.29, 12,425.60 and 8,156.94

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Solution

The fourth proportional to 8,995.29, 12,425.60 and 8,156.94 is: 11,267.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.29 : 12,425.60 = 8,156.94 : x
  2. Step 2: Convert to fraction form
    8,995.29/12,425.60 = 8,156.94/x
  3. Step 3: Cross multiply
    8,995.29x = 12,425.60 × 8,156.94
  4. Step 4: Simplify right side
    8,995.29x = 101,354,832.88
  5. Step 5: Solve for x
    x = 101,354,832.88/8,995.29
  6. Step 6: Final answer
    x = 11,267.54

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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.