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Finding the Fourth Proportional to 11,995.70, 16,557.03 and 8,173.65

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Solution

The fourth proportional to 11,995.70, 16,557.03 and 8,173.65 is: 11,281.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,995.70 : 16,557.03 = 8,173.65 : x
  2. Step 2: Convert to fraction form
    11,995.70/16,557.03 = 8,173.65/x
  3. Step 3: Cross multiply
    11,995.70x = 16,557.03 × 8,173.65
  4. Step 4: Simplify right side
    11,995.70x = 135,331,368.26
  5. Step 5: Solve for x
    x = 135,331,368.26/11,995.70
  6. Step 6: Final answer
    x = 11,281.66

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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.