Home / 12,687.93-19,021.64-5,297.90

Finding the Fourth Proportional to 12,687.93, 19,021.64 and 5,297.90

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Solution

The fourth proportional to 12,687.93, 19,021.64 and 5,297.90 is: 7,942.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.93 : 19,021.64 = 5,297.90 : x
  2. Step 2: Convert to fraction form
    12,687.93/19,021.64 = 5,297.90/x
  3. Step 3: Cross multiply
    12,687.93x = 19,021.64 × 5,297.90
  4. Step 4: Simplify right side
    12,687.93x = 100,774,624.96
  5. Step 5: Solve for x
    x = 100,774,624.96/12,687.93
  6. Step 6: Final answer
    x = 7,942.56

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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.