Home / 12,870.19-19,305.97-4,104.42

Finding the Fourth Proportional to 12,870.19, 19,305.97 and 4,104.42

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Solution

The fourth proportional to 12,870.19, 19,305.97 and 4,104.42 is: 6,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,870.19 : 19,305.97 = 4,104.42 : x
  2. Step 2: Convert to fraction form
    12,870.19/19,305.97 = 4,104.42/x
  3. Step 3: Cross multiply
    12,870.19x = 19,305.97 × 4,104.42
  4. Step 4: Simplify right side
    12,870.19x = 79,239,846.87
  5. Step 5: Solve for x
    x = 79,239,846.87/12,870.19
  6. Step 6: Final answer
    x = 6,156.85

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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.