Home / 11,728.63-16,190.75-7,485.31

Finding the Fourth Proportional to 11,728.63, 16,190.75 and 7,485.31

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Solution

The fourth proportional to 11,728.63, 16,190.75 and 7,485.31 is: 10,333.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.63 : 16,190.75 = 7,485.31 : x
  2. Step 2: Convert to fraction form
    11,728.63/16,190.75 = 7,485.31/x
  3. Step 3: Cross multiply
    11,728.63x = 16,190.75 × 7,485.31
  4. Step 4: Simplify right side
    11,728.63x = 121,192,821.83
  5. Step 5: Solve for x
    x = 121,192,821.83/11,728.63
  6. Step 6: Final answer
    x = 10,333.07

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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.