Home / 12,885.36-19,328.94-4,120.98

Finding the Fourth Proportional to 12,885.36, 19,328.94 and 4,120.98

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Solution

The fourth proportional to 12,885.36, 19,328.94 and 4,120.98 is: 6,181.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.36 : 19,328.94 = 4,120.98 : x
  2. Step 2: Convert to fraction form
    12,885.36/19,328.94 = 4,120.98/x
  3. Step 3: Cross multiply
    12,885.36x = 19,328.94 × 4,120.98
  4. Step 4: Simplify right side
    12,885.36x = 79,654,175.16
  5. Step 5: Solve for x
    x = 79,654,175.16/12,885.36
  6. Step 6: Final answer
    x = 6,181.76

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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.