Home / 12,895.65-19,310.60-8,499.78

Finding the Fourth Proportional to 12,895.65, 19,310.60 and 8,499.78

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Solution

The fourth proportional to 12,895.65, 19,310.60 and 8,499.78 is: 12,728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.65 : 19,310.60 = 8,499.78 : x
  2. Step 2: Convert to fraction form
    12,895.65/19,310.60 = 8,499.78/x
  3. Step 3: Cross multiply
    12,895.65x = 19,310.60 × 8,499.78
  4. Step 4: Simplify right side
    12,895.65x = 164,135,872.92
  5. Step 5: Solve for x
    x = 164,135,872.92/12,895.65
  6. Step 6: Final answer
    x = 12,728.00

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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.