Home / 12,777.78-19,170.72-4,013.58

Finding the Fourth Proportional to 12,777.78, 19,170.72 and 4,013.58

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Solution

The fourth proportional to 12,777.78, 19,170.72 and 4,013.58 is: 6,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.78 : 19,170.72 = 4,013.58 : x
  2. Step 2: Convert to fraction form
    12,777.78/19,170.72 = 4,013.58/x
  3. Step 3: Cross multiply
    12,777.78x = 19,170.72 × 4,013.58
  4. Step 4: Simplify right side
    12,777.78x = 76,943,218.38
  5. Step 5: Solve for x
    x = 76,943,218.38/12,777.78
  6. Step 6: Final answer
    x = 6,021.64

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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.