Home / 12,808.98-19,213.32-7,579.92

Finding the Fourth Proportional to 12,808.98, 19,213.32 and 7,579.92

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Solution

The fourth proportional to 12,808.98, 19,213.32 and 7,579.92 is: 11,369.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.98 : 19,213.32 = 7,579.92 : x
  2. Step 2: Convert to fraction form
    12,808.98/19,213.32 = 7,579.92/x
  3. Step 3: Cross multiply
    12,808.98x = 19,213.32 × 7,579.92
  4. Step 4: Simplify right side
    12,808.98x = 145,635,428.53
  5. Step 5: Solve for x
    x = 145,635,428.53/12,808.98
  6. Step 6: Final answer
    x = 11,369.79

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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.