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Finding the Fourth Proportional to 8,485.92, 12,659.98 and 8,026.65

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Solution

The fourth proportional to 8,485.92, 12,659.98 and 8,026.65 is: 11,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.92 : 12,659.98 = 8,026.65 : x
  2. Step 2: Convert to fraction form
    8,485.92/12,659.98 = 8,026.65/x
  3. Step 3: Cross multiply
    8,485.92x = 12,659.98 × 8,026.65
  4. Step 4: Simplify right side
    8,485.92x = 101,617,228.47
  5. Step 5: Solve for x
    x = 101,617,228.47/8,485.92
  6. Step 6: Final answer
    x = 11,974.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.