Home / 11,728.98-16,186.86-7,743.18

Finding the Fourth Proportional to 11,728.98, 16,186.86 and 7,743.18

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Solution

The fourth proportional to 11,728.98, 16,186.86 and 7,743.18 is: 10,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.98 : 16,186.86 = 7,743.18 : x
  2. Step 2: Convert to fraction form
    11,728.98/16,186.86 = 7,743.18/x
  3. Step 3: Cross multiply
    11,728.98x = 16,186.86 × 7,743.18
  4. Step 4: Simplify right side
    11,728.98x = 125,337,770.61
  5. Step 5: Solve for x
    x = 125,337,770.61/11,728.98
  6. Step 6: Final answer
    x = 10,686.16

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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.