Home / 11,430.72-17,145.84-3,639.36

Finding the Fourth Proportional to 11,430.72, 17,145.84 and 3,639.36

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Solution

The fourth proportional to 11,430.72, 17,145.84 and 3,639.36 is: 5,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.72 : 17,145.84 = 3,639.36 : x
  2. Step 2: Convert to fraction form
    11,430.72/17,145.84 = 3,639.36/x
  3. Step 3: Cross multiply
    11,430.72x = 17,145.84 × 3,639.36
  4. Step 4: Simplify right side
    11,430.72x = 62,399,884.26
  5. Step 5: Solve for x
    x = 62,399,884.26/11,430.72
  6. Step 6: Final answer
    x = 5,458.96

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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.