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Finding the Fourth Proportional to 12,195.01, 16,828.77 and 7,159.15

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Solution

The fourth proportional to 12,195.01, 16,828.77 and 7,159.15 is: 9,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.01 : 16,828.77 = 7,159.15 : x
  2. Step 2: Convert to fraction form
    12,195.01/16,828.77 = 7,159.15/x
  3. Step 3: Cross multiply
    12,195.01x = 16,828.77 × 7,159.15
  4. Step 4: Simplify right side
    12,195.01x = 120,479,688.75
  5. Step 5: Solve for x
    x = 120,479,688.75/12,195.01
  6. Step 6: Final answer
    x = 9,879.43

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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.