Home / 12,777.36-19,164.42-4,991.64

Finding the Fourth Proportional to 12,777.36, 19,164.42 and 4,991.64

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Solution

The fourth proportional to 12,777.36, 19,164.42 and 4,991.64 is: 7,486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.36 : 19,164.42 = 4,991.64 : x
  2. Step 2: Convert to fraction form
    12,777.36/19,164.42 = 4,991.64/x
  3. Step 3: Cross multiply
    12,777.36x = 19,164.42 × 4,991.64
  4. Step 4: Simplify right side
    12,777.36x = 95,661,885.45
  5. Step 5: Solve for x
    x = 95,661,885.45/12,777.36
  6. Step 6: Final answer
    x = 7,486.83

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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.