Home / 12,690.42-19,028.16-5,928.54

Finding the Fourth Proportional to 12,690.42, 19,028.16 and 5,928.54

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Solution

The fourth proportional to 12,690.42, 19,028.16 and 5,928.54 is: 8,889.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.42 : 19,028.16 = 5,928.54 : x
  2. Step 2: Convert to fraction form
    12,690.42/19,028.16 = 5,928.54/x
  3. Step 3: Cross multiply
    12,690.42x = 19,028.16 × 5,928.54
  4. Step 4: Simplify right side
    12,690.42x = 112,809,207.69
  5. Step 5: Solve for x
    x = 112,809,207.69/12,690.42
  6. Step 6: Final answer
    x = 8,889.32

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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.