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Finding the Fourth Proportional to 11,620.70, 16,036.92 and 7,147.08

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Solution

The fourth proportional to 11,620.70, 16,036.92 and 7,147.08 is: 9,863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.70 : 16,036.92 = 7,147.08 : x
  2. Step 2: Convert to fraction form
    11,620.70/16,036.92 = 7,147.08/x
  3. Step 3: Cross multiply
    11,620.70x = 16,036.92 × 7,147.08
  4. Step 4: Simplify right side
    11,620.70x = 114,617,150.19
  5. Step 5: Solve for x
    x = 114,617,150.19/11,620.70
  6. Step 6: Final answer
    x = 9,863.19

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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.