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Finding the Fourth Proportional to 11,208.90, 16,810.04 and 8,079.50

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Solution

The fourth proportional to 11,208.90, 16,810.04 and 8,079.50 is: 12,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208.90 : 16,810.04 = 8,079.50 : x
  2. Step 2: Convert to fraction form
    11,208.90/16,810.04 = 8,079.50/x
  3. Step 3: Cross multiply
    11,208.90x = 16,810.04 × 8,079.50
  4. Step 4: Simplify right side
    11,208.90x = 135,816,718.18
  5. Step 5: Solve for x
    x = 135,816,718.18/11,208.90
  6. Step 6: Final answer
    x = 12,116.86

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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.