Home / 12,772.89-19,145.16-9,642.75

Finding the Fourth Proportional to 12,772.89, 19,145.16 and 9,642.75

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Solution

The fourth proportional to 12,772.89, 19,145.16 and 9,642.75 is: 14,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.89 : 19,145.16 = 9,642.75 : x
  2. Step 2: Convert to fraction form
    12,772.89/19,145.16 = 9,642.75/x
  3. Step 3: Cross multiply
    12,772.89x = 19,145.16 × 9,642.75
  4. Step 4: Simplify right side
    12,772.89x = 184,611,919.80
  5. Step 5: Solve for x
    x = 184,611,919.80/12,772.89
  6. Step 6: Final answer
    x = 14,453.42

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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.