Home / 12,886.88-19,331.08-4,121.11

Finding the Fourth Proportional to 12,886.88, 19,331.08 and 4,121.11

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Solution

The fourth proportional to 12,886.88, 19,331.08 and 4,121.11 is: 6,181.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.88 : 19,331.08 = 4,121.11 : x
  2. Step 2: Convert to fraction form
    12,886.88/19,331.08 = 4,121.11/x
  3. Step 3: Cross multiply
    12,886.88x = 19,331.08 × 4,121.11
  4. Step 4: Simplify right side
    12,886.88x = 79,665,507.10
  5. Step 5: Solve for x
    x = 79,665,507.10/12,886.88
  6. Step 6: Final answer
    x = 6,181.91

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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.