Home / 12,618.55-18,927.89-4,299.45

Finding the Fourth Proportional to 12,618.55, 18,927.89 and 4,299.45

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Solution

The fourth proportional to 12,618.55, 18,927.89 and 4,299.45 is: 6,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.55 : 18,927.89 = 4,299.45 : x
  2. Step 2: Convert to fraction form
    12,618.55/18,927.89 = 4,299.45/x
  3. Step 3: Cross multiply
    12,618.55x = 18,927.89 × 4,299.45
  4. Step 4: Simplify right side
    12,618.55x = 81,379,516.66
  5. Step 5: Solve for x
    x = 81,379,516.66/12,618.55
  6. Step 6: Final answer
    x = 6,449.20

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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.